add node-web-audio-api variant

make computer less angry
node + superdirt experiment
2026-07-14 14:53:45 -04:00 · 2024-05-03 13:05:02 +02:00 · 2024-05-03 10:34:35 +02:00 · 2024-05-03 10:21:56 +02:00 · 2024-05-03 08:46:51 +02:00 · 2024-05-03 00:42:13 +02:00
302 changed files with 17745 additions and 13400 deletions
@@ -21,4 +21,5 @@ vite.config.js
 /src-tauri/target/**/*
 reverbGen.mjs
 hydra.mjs
-jsdoc-synonyms.js
+jsdoc-synonyms.js
+packages/node/pattern.mjs
@@ -127,3 +127,6 @@ fabric.properties
 .idea/caches/build_file_checksums.ser

 # END JetBrains -> BEGIN JetBrains
+
+samples/*
+!samples/README.md
@@ -11,3 +11,4 @@ pnpm-lock.yaml
 pnpm-workspace.yaml
 **/dev-dist
 website/.astro
+packages/node/pattern.mjs
@@ -2,37 +2,28 @@

 [![Strudel test status](https://github.com/tidalcycles/strudel/actions/workflows/test.yml/badge.svg)](https://github.com/tidalcycles/strudel/actions)

-An experiment in making a [Tidal](https://github.com/tidalcycles/tidal/) using web technologies. This software is slowly stabilising, but please continue to tread carefully.
+An experiment in making a [Tidal](https://github.com/tidalcycles/tidal/) using web technologies. This software is a bit more stable now, but please continue to tread carefully.

 - Try it here: <https://strudel.cc>
 - Docs: <https://strudel.cc/learn>
 - Technical Blog Post: <https://loophole-letters.vercel.app/strudel>
 - 1 Year of Strudel Blog Post: <https://loophole-letters.vercel.app/strudel1year>
+- 2 Years of Strudel Blog Post: <https://strudel.cc/blog/#year-2>

 ## Running Locally

 After cloning the project, you can run the REPL locally:

 ```bash
-pnpm run setup
-pnpm run repl
+pnpm i
+pnpm dev
 ```

 ## Using Strudel In Your Project

-There are multiple npm packages you can use to use strudel, or only parts of it, in your project:
+This project is organized into many [packages](./packages), which are also available on [npm](https://www.npmjs.com/search?q=%40strudel).

- [`core`](./packages/core/): tidal pattern engine
- [`mini`](./packages/mini): mini notation parser + core binding
- [`transpiler`](./packages/transpiler): user code transpiler
- [`webaudio`](./packages/webaudio): webaudio output
- [`osc`](./packages/osc): bindings to communicate via OSC
- [`midi`](./packages/midi): webmidi bindings
- [`serial`](./packages/serial): webserial bindings
- [`tonal`](./packages/tonal): tonal functions
- ... [and there are more](./packages/)
-
-Click on the package names to find out more about each one.
+Read more about how to use these in your own project [here](https://strudel.cc/technical-manual/project-start).

 ## Contributing

@@ -1,10 +1,9 @@
 <!doctype html>
+<script src="https://unpkg.com/@strudel/web@1.0.3"></script>
 <button id="play">play</button>
 <button id="stop">stop</button>
-<script type="module">
-  import { initStrudel } from 'https://cdn.skypack.dev/@strudel/web@0.8.2';
-
-  initStrudel();
+<script>
+  strudel.initStrudel();
  document.getElementById('play').addEventListener('click', () => evaluate('note("c a f e").jux(rev)'));
  document.getElementById('play').addEventListener('stop', () => hush());
 </script>
@@ -1,12 +1,12 @@
 <!doctype html>
+<script src="https://unpkg.com/@strudel/web@1.0.3"></script>
 <button id="a">A</button>
 <button id="b">B</button>
 <button id="c">C</button>
 <button id="stop">stop</button>
-<script type="module">
-  import { initStrudel } from 'https://cdn.skypack.dev/@strudel/web@0.8.2';
+<script>
  initStrudel({
-    prebake: () => samples('github:tidalcycles/Dirt-Samples/master'),
+    prebake: () => samples('github:tidalcycles/dirt-samples'),
  });
  const click = (id, action) => document.getElementById(id).addEventListener('click', action);
  click('a', () => evaluate(`s('bd,jvbass(3,8)').jux(rev)`));
@@ -16,6 +16,7 @@
    </div>
    <div id="output"></div>
    <script type="module">
+      // TODO: refactor to use newer version without controls import
      import { controls, repl, evalScope } from 'https://cdn.skypack.dev/@strudel/core@0.11.0';
      import { mini } from 'https://cdn.skypack.dev/@strudel/mini@0.11.0';
      import { transpiler } from 'https://cdn.skypack.dev/@strudel/transpiler@0.11.0';
@@ -52,8 +53,8 @@
      });

      function getTune() {
-        return `await samples('github:tidalcycles/Dirt-Samples/master')
-
+        return `samples('github:tidalcycles/dirt-samples')
+setcps(1);
 stack(
  // amen
  n("0 1 2 3 4 5 6 7")
@@ -1,4 +1,4 @@
-<script src="https://unpkg.com/@strudel/repl@0.9.4"></script>
+<script src="https://unpkg.com/@strudel/repl@1.0.2"></script>
 <strudel-editor>
  <!--
 // @date 23-08-15
@@ -0,0 +1,8 @@
+<script src="https://unpkg.com/@strudel/web@1.0.3"></script>
+<button id="play">PLAY</button>
+<script>
+  initStrudel({
+    prebake: () => samples('github:tidalcycles/dirt-samples'),
+  });
+  document.getElementById('play').addEventListener('click', () => s('bd sd').play());
+</script>
@@ -1,6 +1,6 @@
 import { StrudelMirror } from '@strudel/codemirror';
 import { funk42 } from './tunes';
-import { drawPianoroll, evalScope, controls } from '@strudel/core';
+import { drawPianoroll, evalScope } from '@strudel/core';
 import './style.css';
 import { initAudioOnFirstClick } from '@strudel/webaudio';
 import { transpiler } from '@strudel/transpiler';
@@ -25,7 +25,6 @@ const editor = new StrudelMirror({
  prebake: async () => {
    initAudioOnFirstClick(); // needed to make the browser happy (don't await this here..)
    const loadModules = evalScope(
-      controls,
      import('@strudel/core'),
      import('@strudel/mini'),
      import('@strudel/tonal'),
@@ -1,6 +1,6 @@
 export const bumpStreet = `// froos - "22 bump street", licensed with CC BY-NC-SA 4.0
-await samples('github:felixroos/samples/main')
-await samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')
+samples('github:felixroos/samples')
+samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')

 "<[0,<6 7 9>,13,<17 20 22 26>]!2>/2"
  // make it 22 edo
@@ -33,8 +33,8 @@ await samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tid

 export const trafficFlam = `// froos - "traffic flam", licensed with CC BY-NC-SA 4.0

-await samples('github:felixroos/samples/main')
-await samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')
+samples('github:felixroos/samples')
+samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')

 addVoicings('hip', {
  m11: ['2M 3m 4P 7m'],
@@ -69,8 +69,8 @@ export const funk42 = `// froos - how to funk in 42 lines of code
 // adapted from "how to funk in two minutes" by marc rebillet https://www.youtube.com/watch?v=3vBwRfQbXkg
 // thanks to peach for the transcription: https://www.youtube.com/watch?v=8eiPXvIgda4

-await samples('github:felixroos/samples/main')
-await samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')
+samples('github:felixroos/samples')
+samples('https://strudel.cc/tidal-drum-machines.json', 'github:ritchse/tidal-drum-machines/main/machines/')

 setcps(.5)

@@ -15,7 +15,7 @@
    <script type="module">
      import { initStrudel } from '@strudel/web';
      initStrudel({
-        prebake: () => samples('github:tidalcycles/Dirt-Samples/master'),
+        prebake: () => samples('github:tidalcycles/dirt-samples'),
      });

      const click = (id, action) => document.getElementById(id).addEventListener('click', action);
@@ -1,5 +1,5 @@
-import { controls, repl, evalScope } from '@strudel/core';
-import { getAudioContext, webaudioOutput, initAudioOnFirstClick } from '@strudel/webaudio';
+import { repl, evalScope } from '@strudel/core';
+import { getAudioContext, webaudioOutput, initAudioOnFirstClick, registerSynthSounds } from '@strudel/webaudio';
 import { transpiler } from '@strudel/transpiler';
 import tune from './tune.mjs';

@@ -7,14 +7,9 @@ const ctx = getAudioContext();
 const input = document.getElementById('text');
 input.innerHTML = tune;
 initAudioOnFirstClick();
+registerSynthSounds();

-evalScope(
-  controls,
-  import('@strudel/core'),
-  import('@strudel/mini'),
-  import('@strudel/webaudio'),
-  import('@strudel/tonal'),
-);
+evalScope(import('@strudel/core'), import('@strudel/mini'), import('@strudel/webaudio'), import('@strudel/tonal'));

 const { evaluate } = repl({
  defaultOutput: webaudioOutput,
@@ -1,5 +1,5 @@
-export default `await samples('github:tidalcycles/Dirt-Samples/master')
-
+export default `samples('github:tidalcycles/dirt-samples')
+setcps(1)
 stack(
  // amen
  n("0 1 2 3 4 5 6 7")
@@ -12,7 +12,7 @@

      const init = Promise.all([
        initAudioOnFirstClick(),
-        samples('github:tidalcycles/Dirt-Samples/master'),
+        samples('github:tidalcycles/dirt-samples'),
        registerSynthSounds(),
      ]);

@@ -1,15 +1,20 @@
 // this barrel export is currently only used to find undocumented exports
+export * from './packages/codemirror/index.mjs';
 export * from './packages/core/index.mjs';
 export * from './packages/csound/index.mjs';
-export * from './packages/embed/index.mjs';
 export * from './packages/desktopbridge/index.mjs';
+export * from './packages/draw/index.mjs';
+export * from './packages/embed/index.mjs';
+export * from './packages/hydra/index.mjs';
 export * from './packages/midi/index.mjs';
 export * from './packages/mini/index.mjs';
 export * from './packages/osc/index.mjs';
-export * from './packages/react/index.mjs';
+export * from './packages/repl/index.mjs';
 export * from './packages/serial/index.mjs';
 export * from './packages/soundfonts/index.mjs';
+export * from './packages/superdough/index.mjs';
 export * from './packages/tonal/index.mjs';
 export * from './packages/transpiler/index.mjs';
+export * from './packages/web/index.mjs';
 export * from './packages/webaudio/index.mjs';
 export * from './packages/xen/index.mjs';
@@ -25,6 +25,7 @@
    "format-check": "prettier --check .",
    "report-undocumented": "npm run jsdoc-json && node jsdoc/undocumented.mjs > undocumented.json",
    "check": "npm run format-check && npm run lint && npm run test",
+    "sampler": "cd samples && node ../packages/sampler/sample-server.mjs",
    "iclc": "cd paper && pandoc --template=pandoc/iclc.html --citeproc  --number-sections iclc2023.md -o iclc2023.html && pandoc --template=pandoc/iclc.latex --citeproc --number-sections iclc2023.md -o iclc2023.pdf"
  },
  "repository": {
@@ -53,10 +54,10 @@
    "@strudel/xen": "workspace:*"
  },
  "devDependencies": {
-    "dependency-tree": "^10.0.9",
    "@tauri-apps/cli": "^1.5.9",
    "@vitest/ui": "^1.1.0",
-    "canvas": "^2.11.2",
+    "acorn": "^8.11.3",
+    "dependency-tree": "^10.0.9",
    "eslint": "^8.56.0",
    "eslint-plugin-import": "^2.29.1",
    "events": "^3.3.0",
@@ -2,7 +2,7 @@ import { closeBrackets } from '@codemirror/autocomplete';
 // import { search, highlightSelectionMatches } from '@codemirror/search';
 import { history } from '@codemirror/commands';
 import { javascript } from '@codemirror/lang-javascript';
-import { defaultHighlightStyle, syntaxHighlighting } from '@codemirror/language';
+import { defaultHighlightStyle, syntaxHighlighting, bracketMatching } from '@codemirror/language';
 import { Compartment, EditorState, Prec } from '@codemirror/state';
 import {
  EditorView,
@@ -12,18 +12,22 @@ import {
  lineNumbers,
  drawSelection,
 } from '@codemirror/view';
-import { Pattern, Drawer, repl, cleanupDraw } from '@strudel/core';
+import { Pattern, repl } from '@strudel/core';
+import { Drawer, cleanupDraw } from '@strudel/draw';
 import { isAutoCompletionEnabled } from './autocomplete.mjs';
 import { isTooltipEnabled } from './tooltip.mjs';
 import { flash, isFlashEnabled } from './flash.mjs';
 import { highlightMiniLocations, isPatternHighlightingEnabled, updateMiniLocations } from './highlight.mjs';
 import { keybindings } from './keybindings.mjs';
 import { initTheme, activateTheme, theme } from './themes.mjs';
-import { updateWidgets, sliderPlugin } from './slider.mjs';
+import { sliderPlugin, updateSliderWidgets } from './slider.mjs';
+import { widgetPlugin, updateWidgets } from './widget.mjs';
 import { persistentAtom } from '@nanostores/persistent';

 const extensions = {
  isLineWrappingEnabled: (on) => (on ? EditorView.lineWrapping : []),
+  isBracketMatchingEnabled: (on) => (on ? bracketMatching({ brackets: '()[]{}<>' }) : []),
+  isBracketClosingEnabled: (on) => (on ? closeBrackets() : []),
  isLineNumbersDisplayed: (on) => (on ? lineNumbers() : []),
  theme,
  isAutoCompletionEnabled,
@@ -37,6 +41,8 @@ const compartments = Object.fromEntries(Object.keys(extensions).map((key) => [ke

 export const defaultSettings = {
  keybindings: 'codemirror',
+  isBracketMatchingEnabled: false,
+  isBracketClosingEnabled: true,
  isLineNumbersDisplayed: true,
  isActiveLineHighlighted: false,
  isAutoCompletionEnabled: false,
@@ -69,9 +75,9 @@ export function initEditor({ initialCode = '', onChange, onEvaluate, onStop, roo
      ...initialSettings,
      javascript(),
      sliderPlugin,
+      widgetPlugin,
      // indentOnInput(), // works without. already brought with javascript extension?
      // bracketMatching(), // does not do anything
-      closeBrackets(),
      syntaxHighlighting(defaultHighlightStyle),
      history(),
      EditorView.updateListener.of((v) => onChange(v)),
@@ -123,6 +129,7 @@ export class StrudelMirror {
      id,
      initialCode = '',
      onDraw,
+      drawContext,
      drawTime = [0, 0],
      autodraw,
      prebake,
@@ -135,23 +142,16 @@ export class StrudelMirror {
    this.widgets = [];
    this.painters = [];
    this.drawTime = drawTime;
-    this.onDraw = onDraw;
-    const self = this;
+    this.drawContext = drawContext;
+    this.onDraw = onDraw || this.draw;
    this.id = id || s4();

    this.drawer = new Drawer((haps, time) => {
-      const currentFrame = haps.filter((hap) => time >= hap.whole.begin && time <= hap.endClipped);
+      const currentFrame = haps.filter((hap) => hap.isActive(time));
      this.highlight(currentFrame, time);
-      this.onDraw?.(haps, time, currentFrame, this.painters);
+      this.onDraw(haps, time, this.painters);
    }, drawTime);

-    // this approach does not work with multiple repls on screen
-    // TODO: refactor onPaint usages + find fix, maybe remove painters here?
-    Pattern.prototype.onPaint = function (onPaint) {
-      self.painters.push(onPaint);
-      return this;
-    };
-
    this.prebaked = prebake();
    autodraw && this.drawFirstFrame();

@@ -177,6 +177,14 @@ export class StrudelMirror {
      beforeEval: async () => {
        cleanupDraw();
        this.painters = [];
+        const self = this;
+        // this is similar to repl.mjs > injectPatternMethods
+        // maybe there is a solution without prototype hacking, but hey, it works
+        // we need to do this befor every eval to make sure it works with multiple StrudelMirror's side by side
+        Pattern.prototype.onPaint = function (onPaint) {
+          self.painters.push(onPaint);
+          return this;
+        };
        await this.prebaked;
        await replOptions?.beforeEval?.();
      },
@@ -184,7 +192,10 @@ export class StrudelMirror {
        // remember for when highlighting is toggled on
        this.miniLocations = options.meta?.miniLocations;
        this.widgets = options.meta?.widgets;
-        updateWidgets(this.editor, this.widgets);
+        const sliders = this.widgets.filter((w) => w.type === 'slider');
+        updateSliderWidgets(this.editor, sliders);
+        const widgets = this.widgets.filter((w) => w.type !== 'slider');
+        updateWidgets(this.editor, widgets);
        updateMiniLocations(this.editor, this.miniLocations);
        replOptions?.afterEval?.(options);
        this.adjustDrawTime();
@@ -228,6 +239,9 @@ export class StrudelMirror {
    // when no painters are set, [0,0] is enough (just highlighting)
    this.drawer.setDrawTime(this.painters.length ? this.drawTime : [0, 0]);
  }
+  draw(haps, time) {
+    this.painters?.forEach((painter) => painter(this.drawContext, time, haps, this.drawTime));
+  }
  async drawFirstFrame() {
    if (!this.onDraw) {
      return;
@@ -238,7 +252,7 @@ export class StrudelMirror {
      await this.repl.evaluate(this.code, false);
      this.drawer.invalidate(this.repl.scheduler, -0.001);
      // draw at -0.001 to avoid haps at 0 to be visualized as active
-      this.onDraw?.(this.drawer.visibleHaps, -0.001, [], this.painters);
+      this.onDraw?.(this.drawer.visibleHaps, -0.001, this.painters);
    } catch (err) {
      console.warn('first frame could not be painted');
    }
@@ -290,9 +304,15 @@ export class StrudelMirror {
  setLineWrappingEnabled(enabled) {
    this.reconfigureExtension('isLineWrappingEnabled', enabled);
  }
+  setBracketMatchingEnabled(enabled) {
+    this.reconfigureExtension('isBracketMatchingEnabled', enabled);
+  }
  setLineNumbersDisplayed(enabled) {
    this.reconfigureExtension('isLineNumbersDisplayed', enabled);
  }
+  setBracketClosingEnabled(enabled) {
+    this.reconfigureExtension('isBracketClosingEnabled', enabled);
+  }
  setTheme(theme) {
    this.reconfigureExtension('theme', theme);
  }
@@ -92,7 +92,7 @@ const miniLocationHighlights = EditorView.decorations.compute([miniLocations, vi

    if (haps.has(id)) {
      const hap = haps.get(id);
-      const color = hap.context.color ?? 'var(--foreground)';
+      const color = hap.value?.color ?? 'var(--foreground)';
      // Get explicit channels for color values
      /* 
      const swatch = document.createElement('div');
@@ -3,3 +3,4 @@ export * from './highlight.mjs';
 export * from './flash.mjs';
 export * from './slider.mjs';
 export * from './themes.mjs';
+export * from './widget.mjs';
@@ -1,11 +1,10 @@
 {
  "name": "@strudel/codemirror",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Codemirror Extensions for Strudel",
  "main": "index.mjs",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "build": "vite build",
@@ -46,6 +45,8 @@
    "@replit/codemirror-vim": "^6.1.0",
    "@replit/codemirror-vscode-keymap": "^6.0.2",
    "@strudel/core": "workspace:*",
+    "@strudel/draw": "workspace:*",
+    "@strudel/transpiler": "workspace:*",
    "@uiw/codemirror-themes": "^4.21.21",
    "@uiw/codemirror-themes-all": "^4.21.21",
    "nanostores": "^0.9.5"
@@ -1,6 +1,6 @@
 import { ref, pure } from '@strudel/core';
 import { WidgetType, ViewPlugin, Decoration } from '@codemirror/view';
-import { StateEffect, StateField } from '@codemirror/state';
+import { StateEffect } from '@codemirror/state';

 export let sliderValues = {};
 const getSliderID = (from) => `slider_${from}`;
@@ -60,19 +60,21 @@ export class SliderWidget extends WidgetType {
  }
 }

-export const setWidgets = StateEffect.define();
+export const setSliderWidgets = StateEffect.define();

-export const updateWidgets = (view, widgets) => {
-  view.dispatch({ effects: setWidgets.of(widgets) });
+export const updateSliderWidgets = (view, widgets) => {
+  view.dispatch({ effects: setSliderWidgets.of(widgets) });
 };

-function getWidgets(widgetConfigs, view) {
-  return widgetConfigs.map(({ from, to, value, min, max, step }) => {
-    return Decoration.widget({
-      widget: new SliderWidget(value, min, max, from, to, step, view),
-      side: 0,
-    }).range(from /* , to */);
-  });
+function getSliders(widgetConfigs, view) {
+  return widgetConfigs
+    .filter((w) => w.type === 'slider')
+    .map(({ from, to, value, min, max, step }) => {
+      return Decoration.widget({
+        widget: new SliderWidget(value, min, max, from, to, step, view),
+        side: 0,
+      }).range(from /* , to */);
+    });
 }

 export const sliderPlugin = ViewPlugin.fromClass(
@@ -99,8 +101,8 @@ export const sliderPlugin = ViewPlugin.fromClass(
          }
        }
        for (let e of tr.effects) {
-          if (e.is(setWidgets)) {
-            this.decorations = Decoration.set(getWidgets(e.value, update.view));
+          if (e.is(setSliderWidgets)) {
+            this.decorations = Decoration.set(getSliders(e.value, update.view));
          }
        }
      });
@@ -37,6 +37,7 @@ import whitescreen, { settings as whitescreenSettings } from './themes/whitescre
 import teletext, { settings as teletextSettings } from './themes/teletext';
 import algoboy, { settings as algoboySettings } from './themes/algoboy';
 import terminal, { settings as terminalSettings } from './themes/terminal';
+import { setTheme } from '@strudel/draw';

 export const themes = {
  strudelTheme,
@@ -513,6 +514,7 @@ export function activateTheme(name) {
        .map(([key, value]) => `--${key}: ${value} !important;`)
        .join('\n')}
    }`;
+  setTheme(themeSettings);
  // tailwind dark mode
  if (themeSettings.light) {
    document.documentElement.classList.remove('dark');
@@ -18,6 +18,7 @@ export default createTheme({
  theme: 'light',
  settings,
  styles: [
+    { tag: t.labelName, color: '#0f380f' },
    { tag: t.keyword, color: '#0f380f' },
    { tag: t.operator, color: '#0f380f' },
    { tag: t.special(t.variableName), color: '#0f380f' },
@@ -15,6 +15,7 @@ export default createTheme({
  theme: 'dark',
  settings,
  styles: [
+    { tag: t.labelName, color: 'white' },
    { tag: t.keyword, color: 'white' },
    { tag: t.operator, color: 'white' },
    { tag: t.special(t.variableName), color: 'white' },
@@ -18,6 +18,7 @@ export default createTheme({
  theme: 'dark',
  settings,
  styles: [
+    { tag: t.labelName, color: 'white' },
    { tag: t.keyword, color: 'white' },
    { tag: t.operator, color: 'white' },
    { tag: t.special(t.variableName), color: 'white' },
@@ -15,6 +15,7 @@ export default createTheme({
    gutterForeground: '#8a919966',
  },
  styles: [
+    { tag: t.labelName, color: '#89ddff' },
    { tag: t.keyword, color: '#c792ea' },
    { tag: t.operator, color: '#89ddff' },
    { tag: t.special(t.variableName), color: '#eeffff' },
@@ -27,6 +27,7 @@ export default createTheme({
  theme: 'dark',
  settings,
  styles: [
+    { tag: t.labelName, color: colorB },
    { tag: t.keyword, color: colorA },
    { tag: t.operator, color: mini },
    { tag: t.special(t.variableName), color: colorA },
@@ -14,6 +14,7 @@ export default createTheme({
  theme: 'dark',
  settings,
  styles: [
+    { tag: t.labelName, color: '#41FF00' },
    { tag: t.keyword, color: '#41FF00' },
    { tag: t.operator, color: '#41FF00' },
    { tag: t.special(t.variableName), color: '#41FF00' },
@@ -16,6 +16,7 @@ export default createTheme({
  theme: 'light',
  settings,
  styles: [
+    { tag: t.labelName, color: 'black' },
    { tag: t.keyword, color: 'black' },
    { tag: t.operator, color: 'black' },
    { tag: t.special(t.variableName), color: 'black' },
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -0,0 +1,135 @@
+import { StateEffect, StateField } from '@codemirror/state';
+import { Decoration, EditorView, WidgetType } from '@codemirror/view';
+import { getWidgetID, registerWidgetType } from '@strudel/transpiler';
+import { Pattern } from '@strudel/core';
+
+export const addWidget = StateEffect.define({
+  map: ({ from, to }, change) => {
+    return { from: change.mapPos(from), to: change.mapPos(to) };
+  },
+});
+
+export const updateWidgets = (view, widgets) => {
+  view.dispatch({ effects: addWidget.of(widgets) });
+};
+
+function getWidgets(widgetConfigs) {
+  return (
+    widgetConfigs
+      // codemirror throws an error if we don't sort
+      .sort((a, b) => a.to - b.to)
+      .map((widgetConfig) => {
+        return Decoration.widget({
+          widget: new BlockWidget(widgetConfig),
+          side: 0,
+          block: true,
+        }).range(widgetConfig.to);
+      })
+  );
+}
+
+const widgetField = StateField.define(
+  /* <DecorationSet> */ {
+    create() {
+      return Decoration.none;
+    },
+    update(widgets, tr) {
+      widgets = widgets.map(tr.changes);
+      for (let e of tr.effects) {
+        if (e.is(addWidget)) {
+          try {
+            widgets = widgets.update({
+              filter: () => false,
+              add: getWidgets(e.value),
+            });
+          } catch (error) {
+            console.log('err', error);
+          }
+        }
+      }
+      return widgets;
+    },
+    provide: (f) => EditorView.decorations.from(f),
+  },
+);
+
+const widgetElements = {};
+export function setWidget(id, el) {
+  widgetElements[id] = el;
+  el.id = id;
+}
+
+export class BlockWidget extends WidgetType {
+  constructor(widgetConfig) {
+    super();
+    this.widgetConfig = widgetConfig;
+  }
+  eq() {
+    return true;
+  }
+  toDOM() {
+    const id = getWidgetID(this.widgetConfig);
+    const el = widgetElements[id];
+    return el;
+  }
+  ignoreEvent(e) {
+    return true;
+  }
+}
+
+export const widgetPlugin = [widgetField];
+
+// widget implementer API to create a new widget type
+export function registerWidget(type, fn) {
+  registerWidgetType(type);
+  if (fn) {
+    Pattern.prototype[type] = function (id, options = { fold: 1 }) {
+      // fn is expected to create a dom element and call setWidget(id, el);
+      // fn should also return the pattern
+      return fn(id, options, this);
+    };
+  }
+}
+
+// wire up @strudel/draw functions
+
+function getCanvasWidget(id, options = {}) {
+  const { width = 500, height = 60, pixelRatio = window.devicePixelRatio } = options;
+  let canvas = document.getElementById(id) || document.createElement('canvas');
+  canvas.width = width * pixelRatio;
+  canvas.height = height * pixelRatio;
+  canvas.style.width = width + 'px';
+  canvas.style.height = height + 'px';
+  setWidget(id, canvas);
+  return canvas;
+}
+
+registerWidget('_pianoroll', (id, options = {}, pat) => {
+  const ctx = getCanvasWidget(id, options).getContext('2d');
+  return pat.tag(id).pianoroll({ fold: 1, ...options, ctx, id });
+});
+
+registerWidget('_punchcard', (id, options = {}, pat) => {
+  const ctx = getCanvasWidget(id, options).getContext('2d');
+  return pat.tag(id).punchcard({ fold: 1, ...options, ctx, id });
+});
+
+registerWidget('_spiral', (id, options = {}, pat) => {
+  let _size = options.size || 275;
+  options = { width: _size, height: _size, ...options, size: _size / 5 };
+  const ctx = getCanvasWidget(id, options).getContext('2d');
+  return pat.tag(id).spiral({ ...options, ctx, id });
+});
+
+registerWidget('_scope', (id, options = {}, pat) => {
+  options = { width: 500, height: 60, pos: 0.5, scale: 1, ...options };
+  const ctx = getCanvasWidget(id, options).getContext('2d');
+  return pat.tag(id).scope({ ...options, ctx, id });
+});
+
+registerWidget('_pitchwheel', (id, options = {}, pat) => {
+  let _size = options.size || 200;
+  options = { width: _size, height: _size, ...options, size: _size / 5 };
+  const ctx = getCanvasWidget(id, options).getContext('2d');
+  return pat.pitchwheel({ ...options, ctx, id });
+});
@@ -0,0 +1,168 @@
+// eslint-disable-next-line no-undef
+// TODO: swap below line with above one when firefox supports esm imports in service workers
+// see https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker?retiredLocale=de#browser_compatibility
+// import createClock from './zyklus.mjs';
+
+function getTime() {
+  const precision = 10 ** 4;
+  const seconds = performance.now() / 1000;
+  return Math.round(seconds * precision) / precision;
+}
+
+let num_cycles_at_cps_change = 0;
+let num_ticks_since_cps_change = 0;
+let num_seconds_at_cps_change = 0;
+let cps = 0.5;
+// {id: {started: boolean}}
+const clients = new Map();
+const duration = 0.1;
+const channel = new BroadcastChannel('strudeltick');
+
+const sendMessage = (type, payload) => {
+  channel.postMessage({ type, payload });
+};
+
+const sendTick = (phase, duration, tick, time) => {
+  const num_seconds_since_cps_change = num_ticks_since_cps_change * duration;
+
+  const tickdeadline = phase - time;
+  const lastTick = time + tickdeadline;
+  const num_cycles_since_cps_change = num_seconds_since_cps_change * cps;
+
+  const begin = num_cycles_at_cps_change + num_cycles_since_cps_change;
+  const secondsSinceLastTick = time - lastTick - duration;
+
+  const eventLength = duration * cps;
+  const end = begin + eventLength;
+
+  const cycle = begin + secondsSinceLastTick * cps;
+
+  sendMessage('tick', {
+    begin,
+    end,
+    cps,
+    tickdeadline,
+    num_cycles_at_cps_change,
+    num_seconds_at_cps_change,
+    num_seconds_since_cps_change,
+    cycle,
+  });
+  num_ticks_since_cps_change++;
+};
+
+//create clock method from zyklus
+const clock = createClock(getTime, sendTick, duration);
+let started = false;
+
+const startClock = (id) => {
+  clients.set(id, { started: true });
+  if (started) {
+    return;
+  }
+  clock.start();
+  started = true;
+};
+const stopClock = async (id) => {
+  clients.set(id, { started: false });
+
+  const otherClientStarted = Array.from(clients.values()).some((c) => c.started);
+  //dont stop the clock if other instances are running...
+  if (!started || otherClientStarted) {
+    return;
+  }
+
+  clock.stop();
+  setCycle(0);
+  started = false;
+};
+
+const setCycle = (cycle) => {
+  num_ticks_since_cps_change = 0;
+  num_cycles_at_cps_change = cycle;
+};
+
+const processMessage = (message) => {
+  const { type, payload } = message;
+
+  switch (type) {
+    case 'cpschange': {
+      if (payload.cps !== cps) {
+        const num_seconds_since_cps_change = num_ticks_since_cps_change * duration;
+        num_cycles_at_cps_change = num_cycles_at_cps_change + num_seconds_since_cps_change * cps;
+        num_seconds_at_cps_change = num_seconds_at_cps_change + num_seconds_since_cps_change;
+        cps = payload.cps;
+        num_ticks_since_cps_change = 0;
+      }
+      break;
+    }
+    case 'setcycle': {
+      setCycle(payload.cycle);
+      break;
+    }
+    case 'toggle': {
+      if (payload.started) {
+        startClock(message.id);
+      } else {
+        stopClock(message.id);
+      }
+      break;
+    }
+  }
+};
+
+self.onconnect = function (e) {
+  // the incoming port
+  const port = e.ports[0];
+
+  port.addEventListener('message', function (e) {
+    processMessage(e.data);
+  });
+  port.start(); // Required when using addEventListener. Otherwise called implicitly by onmessage setter.
+};
+
+// used to consistently schedule events, for use in a service worker - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/clockworker.mjs>
+function createClock(
+  getTime,
+  callback, // called slightly before each cycle
+  duration = 0.05, // duration of each cycle
+  interval = 0.1, // interval between callbacks
+  overlap = 0.1, // overlap between callbacks
+) {
+  let tick = 0; // counts callbacks
+  let phase = 0; // next callback time
+  let precision = 10 ** 4; // used to round phase
+  let minLatency = 0.01;
+  const setDuration = (setter) => (duration = setter(duration));
+  overlap = overlap || interval / 2;
+  const onTick = () => {
+    const t = getTime();
+    const lookahead = t + interval + overlap; // the time window for this tick
+    if (phase === 0) {
+      phase = t + minLatency;
+    }
+    // callback as long as we're inside the lookahead
+    while (phase < lookahead) {
+      phase = Math.round(phase * precision) / precision;
+      phase >= t && callback(phase, duration, tick, t);
+      phase < t && console.log('TOO LATE', phase); // what if latency is added from outside?
+      phase += duration; // increment phase by duration
+      tick++;
+    }
+  };
+  let intervalID;
+  const start = () => {
+    clear(); // just in case start was called more than once
+    onTick();
+    intervalID = setInterval(onTick, interval * 1000);
+  };
+  const clear = () => intervalID !== undefined && clearInterval(intervalID);
+  const pause = () => clear();
+  const stop = () => {
+    tick = 0;
+    phase = 0;
+    clear();
+  };
+  const getPhase = () => phase;
+  // setCallback
+  return { setDuration, start, stop, pause, duration, interval, getPhase, minLatency };
+}
@@ -1,5 +1,5 @@
 /*
-cyclist.mjs - <short description TODO>
+cyclist.mjs - event scheduler for a single strudel instance. for multi-instance scheduler, see - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/neocyclist.mjs>
 Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/cyclist.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
@@ -8,7 +8,7 @@ import createClock from './zyklus.mjs';
 import { logger } from './logger.mjs';

 export class Cyclist {
-  constructor({ interval, onTrigger, onToggle, onError, getTime, latency = 0.1 }) {
+  constructor({ interval, onTrigger, onToggle, onError, getTime, latency = 0.1, setInterval, clearInterval }) {
    this.started = false;
    this.cps = 0.5;
    this.num_ticks_since_cps_change = 0;
@@ -16,41 +16,47 @@ export class Cyclist {
    this.lastBegin = 0; // query begin of last tick
    this.lastEnd = 0; // query end of last tick
    this.getTime = getTime; // get absolute time
-    this.num_cycles_since_last_cps_change = 0;
+    this.num_cycles_at_cps_change = 0;
+    this.seconds_at_cps_change; // clock phase when cps was changed
    this.onToggle = onToggle;
    this.latency = latency; // fixed trigger time offset
    this.clock = createClock(
      getTime,
      // called slightly before each cycle
-      (phase, duration, tick) => {
-        if (tick === 0) {
-          this.origin = phase;
-        }
+      (phase, duration, _, t) => {
        if (this.num_ticks_since_cps_change === 0) {
-          this.num_cycles_since_last_cps_change = this.lastEnd;
+          this.num_cycles_at_cps_change = this.lastEnd;
+          this.seconds_at_cps_change = phase;
        }
        this.num_ticks_since_cps_change++;
+        const seconds_since_cps_change = this.num_ticks_since_cps_change * duration;
+        const num_cycles_since_cps_change = seconds_since_cps_change * this.cps;
+
        try {
-          const time = getTime();
          const begin = this.lastEnd;
          this.lastBegin = begin;
-
-          //convert ticks to cycles, so you can query the pattern for events
-          const eventLength = duration * this.cps;
-          const end = this.num_cycles_since_last_cps_change + this.num_ticks_since_cps_change * eventLength;
+          const end = this.num_cycles_at_cps_change + num_cycles_since_cps_change;
          this.lastEnd = end;
+          this.lastTick = phase;
+
+          if (phase < t) {
+            // avoid querying haps that are in the past anyway
+            console.log(`skip query: too late`);
+            return;
+          }

          // query the pattern for events
          const haps = this.pattern.queryArc(begin, end, { _cps: this.cps });

-          const tickdeadline = phase - time; // time left until the phase is a whole number
-          this.lastTick = time + tickdeadline;
-
          haps.forEach((hap) => {
-            if (hap.part.begin.equals(hap.whole.begin)) {
-              const deadline = (hap.whole.begin - begin) / this.cps + tickdeadline + latency;
+            if (hap.hasOnset()) {
+              const targetTime =
+                (hap.whole.begin - this.num_cycles_at_cps_change) / this.cps + this.seconds_at_cps_change + latency;
              const duration = hap.duration / this.cps;
-              onTrigger?.(hap, deadline, duration, this.cps);
+              // the following line is dumb and only here for backwards compatibility
+              // see https://github.com/tidalcycles/strudel/pull/1004
+              const deadline = targetTime - phase;
+              onTrigger?.(hap, deadline, duration, this.cps, targetTime);
            }
          });
        } catch (e) {
@@ -59,9 +65,16 @@ export class Cyclist {
        }
      },
      interval, // duration of each cycle
+      0.1,
+      0.1,
+      setInterval,
+      clearInterval,
    );
  }
  now() {
+    if (!this.started) {
+      return 0;
+    }
    const secondsSinceLastTick = this.getTime() - this.lastTick - this.clock.duration;
    return this.lastBegin + secondsSinceLastTick * this.cps; // + this.clock.minLatency;
  }
@@ -71,7 +84,7 @@ export class Cyclist {
  }
  start() {
    this.num_ticks_since_cps_change = 0;
-    this.num_cycles_since_last_cps_change = 0;
+    this.num_cycles_at_cps_change = 0;
    if (!this.pattern) {
      throw new Error('Scheduler: no pattern set! call .setPattern first.');
    }
@@ -41,11 +41,17 @@ const _bjork = function (n, x) {
 };

 export const bjork = function (ons, steps) {
+  const inverted = ons < 0;
+  ons = Math.abs(ons);
  const offs = steps - ons;
  const x = Array(ons).fill([1]);
  const y = Array(offs).fill([0]);
  const result = _bjork([ons, offs], [x, y]);
-  return flatten(result[1][0]).concat(flatten(result[1][1]));
+  const p = flatten(result[1][0]).concat(flatten(result[1][1]));
+  if (inverted) {
+    return p.map((x) => (x === 0 ? 1 : 0));
+  }
+  return p;
 };

 /**
@@ -22,6 +22,7 @@ export const evalScope = async (...args) => {
      globalThis[name] = value;
    });
  });
+  return modules;
 };

 function safeEval(str, options = {}) {
@@ -6,6 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th

 import Fraction from 'fraction.js';
 import { TimeSpan } from './timespan.mjs';
+import { removeUndefineds } from './util.mjs';

 // Returns the start of the cycle.
 Fraction.prototype.sam = function () {
@@ -47,14 +48,39 @@ Fraction.prototype.eq = function (other) {
  return this.compare(other) == 0;
 };

+Fraction.prototype.ne = function (other) {
+  return this.compare(other) != 0;
+};
+
 Fraction.prototype.max = function (other) {
  return this.gt(other) ? this : other;
 };

+Fraction.prototype.maximum = function (...others) {
+  others = others.map((x) => new Fraction(x));
+  return others.reduce((max, other) => other.max(max), this);
+};
+
 Fraction.prototype.min = function (other) {
  return this.lt(other) ? this : other;
 };

+Fraction.prototype.mulmaybe = function (other) {
+  return other !== undefined ? this.mul(other) : undefined;
+};
+
+Fraction.prototype.divmaybe = function (other) {
+  return other !== undefined ? this.div(other) : undefined;
+};
+
+Fraction.prototype.addmaybe = function (other) {
+  return other !== undefined ? this.add(other) : undefined;
+};
+
+Fraction.prototype.submaybe = function (other) {
+  return other !== undefined ? this.sub(other) : undefined;
+};
+
 Fraction.prototype.show = function (/* excludeWhole = false */) {
  // return this.toFraction(excludeWhole);
  return this.s * this.n + '/' + this.d;
@@ -80,9 +106,26 @@ const fraction = (n) => {
 };

 export const gcd = (...fractions) => {
+  fractions = removeUndefineds(fractions);
+  if (fractions.length === 0) {
+    return undefined;
+  }
+
  return fractions.reduce((gcd, fraction) => gcd.gcd(fraction), fraction(1));
 };

+export const lcm = (...fractions) => {
+  fractions = removeUndefineds(fractions);
+  if (fractions.length === 0) {
+    return undefined;
+  }
+
+  return fractions.reduce(
+    (lcm, fraction) => (lcm === undefined || fraction === undefined ? undefined : lcm.lcm(fraction)),
+    fraction(1),
+  );
+};
+
 fraction._original = Fraction;

 export default fraction;
@@ -3,6 +3,7 @@ hap.mjs - <short description TODO>
 Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/hap.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
+import Fraction from './fraction.mjs';

 export class Hap {
  /*
@@ -32,13 +33,43 @@ export class Hap {
  }

  get duration() {
-    return this.whole.end.sub(this.whole.begin).mul(typeof this.value?.clip === 'number' ? this.value?.clip : 1);
+    let duration;
+    if (typeof this.value?.duration === 'number') {
+      duration = Fraction(this.value.duration);
+    } else {
+      duration = this.whole.end.sub(this.whole.begin);
+    }
+    if (typeof this.value?.clip === 'number') {
+      return duration.mul(this.value.clip);
+    }
+    return duration;
  }

  get endClipped() {
    return this.whole.begin.add(this.duration);
  }

+  isActive(currentTime) {
+    return this.whole.begin <= currentTime && this.endClipped >= currentTime;
+  }
+
+  isInPast(currentTime) {
+    return currentTime > this.endClipped;
+  }
+  isInNearPast(margin, currentTime) {
+    return currentTime - margin <= this.endClipped;
+  }
+
+  isInFuture(currentTime) {
+    return currentTime < this.whole.begin;
+  }
+  isInNearFuture(margin, currentTime) {
+    return currentTime < this.whole.begin && currentTime > this.whole.begin - margin;
+  }
+  isWithinTime(min, max) {
+    return this.whole.begin <= max && this.endClipped >= min;
+  }
+
  wholeOrPart() {
    return this.whole ? this.whole : this.part;
  }
@@ -60,6 +91,10 @@ export class Hap {
    return this.whole != undefined && this.whole.begin.equals(this.part.begin);
  }

+  hasTag(tag) {
+    return this.context.tags?.includes(tag);
+  }
+
  resolveState(state) {
    if (this.stateful && this.hasOnset()) {
      console.log('stateful');
@@ -4,11 +4,13 @@ Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/st
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-import controls from './controls.mjs';
+import * as controls from './controls.mjs'; // legacy
 export * from './euclid.mjs';
 import Fraction from './fraction.mjs';
+import createClock from './zyklus.mjs';
 import { logger } from './logger.mjs';
-export { Fraction, controls };
+export { Fraction, controls, createClock };
+export * from './controls.mjs';
 export * from './hap.mjs';
 export * from './pattern.mjs';
 export * from './signal.mjs';
@@ -21,10 +23,6 @@ export * from './repl.mjs';
 export * from './cyclist.mjs';
 export * from './logger.mjs';
 export * from './time.mjs';
-export * from './draw.mjs';
-export * from './animate.mjs';
-export * from './pianoroll.mjs';
-export * from './spiral.mjs';
 export * from './ui.mjs';
 export { default as drawLine } from './drawLine.mjs';
 // below won't work with runtime.mjs (json import fails)
@@ -1,6 +1,16 @@
 export const logKey = 'strudel.log';

+let debounce = 1000,
+  lastMessage,
+  lastTime;
+
 export function logger(message, type, data = {}) {
+  let t = performance.now();
+  if (lastMessage === message && t - lastTime < debounce) {
+    return;
+  }
+  lastMessage = message;
+  lastTime = t;
  console.log(`%c${message}`, 'background-color: black;color:white;border-radius:15px');
  if (typeof document !== 'undefined' && typeof CustomEvent !== 'undefined') {
    document.dispatchEvent(
@@ -0,0 +1,147 @@
+/*
+neocyclist.mjs - event scheduler like cyclist, except recieves clock pulses from clockworker in order to sync across multiple instances.
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/neocyclist.mjs>
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { logger } from './logger.mjs';
+
+export class NeoCyclist {
+  constructor({ onTrigger, onToggle, getTime }) {
+    this.started = false;
+    this.cps = 0.5;
+    this.lastTick = 0; // absolute time when last tick (clock callback) happened
+    this.getTime = getTime; // get absolute time
+    this.time_at_last_tick_message = 0;
+
+    this.num_cycles_at_cps_change = 0;
+    this.onToggle = onToggle;
+    this.latency = 0.1; // fixed trigger time offset
+    this.cycle = 0;
+    this.id = Math.round(Date.now() * Math.random());
+    this.worker_time_dif;
+    this.worker = new SharedWorker(new URL('./clockworker.js', import.meta.url));
+    this.worker.port.start();
+
+    this.channel = new BroadcastChannel('strudeltick');
+    let weight = 0; // the amount of weight that is applied to the current average when averaging a new time dif
+    const maxWeight = 20;
+    const precision = 10 ** 3; //round off time diff to prevent accumulating outliers
+
+    // the clock of the worker and the audio context clock can drift apart over time
+    // aditionally, the message time of the worker pinging the callback to process haps can be inconsistent.
+    // we need to keep a rolling weighted average of the time difference between the worker clock and audio context clock
+    // in order to schedule events consistently.
+    const setTimeReference = (num_seconds_at_cps_change, num_seconds_since_cps_change, tickdeadline) => {
+      const time_dif = getTime() - (num_seconds_at_cps_change + num_seconds_since_cps_change) + tickdeadline;
+      if (this.worker_time_dif == null) {
+        this.worker_time_dif = time_dif;
+      } else {
+        const w = 1; //weight of new time diff;
+        const new_dif =
+          Math.round(((this.worker_time_dif * weight + time_dif * w) / (weight + w)) * precision) / precision;
+
+        if (new_dif != this.worker_time_dif) {
+          // reset the weight so the clock recovers faster from an audio context freeze/dropout if it happens
+          weight = 4;
+        }
+        this.worker_time_dif = new_dif;
+      }
+      weight = Math.min(weight + 1, maxWeight);
+    };
+
+    const tickCallback = (payload) => {
+      const {
+        num_cycles_at_cps_change,
+        cps,
+        num_seconds_at_cps_change,
+        num_seconds_since_cps_change,
+        begin,
+        end,
+        tickdeadline,
+        cycle,
+      } = payload;
+      this.cps = cps;
+      this.cycle = cycle;
+
+      setTimeReference(num_seconds_at_cps_change, num_seconds_since_cps_change, tickdeadline);
+
+      processHaps(begin, end, num_cycles_at_cps_change, num_seconds_at_cps_change);
+
+      this.time_at_last_tick_message = this.getTime();
+    };
+
+    const processHaps = (begin, end, num_cycles_at_cps_change, seconds_at_cps_change) => {
+      if (this.started === false) {
+        return;
+      }
+
+      const haps = this.pattern.queryArc(begin, end, { _cps: this.cps });
+
+      haps.forEach((hap) => {
+        if (hap.hasOnset()) {
+          const targetTime =
+            (hap.whole.begin - num_cycles_at_cps_change) / this.cps +
+            seconds_at_cps_change +
+            this.latency +
+            this.worker_time_dif;
+          const duration = hap.duration / this.cps;
+          onTrigger?.(hap, 0, duration, this.cps, targetTime);
+        }
+      });
+    };
+
+    // receive messages from worker clock and process them
+    this.channel.onmessage = (message) => {
+      if (!this.started) {
+        return;
+      }
+      const { payload, type } = message.data;
+
+      switch (type) {
+        case 'tick': {
+          tickCallback(payload);
+        }
+      }
+    };
+  }
+  sendMessage(type, payload) {
+    this.worker.port.postMessage({ type, payload, id: this.id });
+  }
+
+  now() {
+    const gap = (this.getTime() - this.time_at_last_tick_message) * this.cps;
+    return this.cycle + gap;
+  }
+  setCps(cps = 1) {
+    this.sendMessage('cpschange', { cps });
+  }
+  setCycle(cycle) {
+    this.sendMessage('setcycle', { cycle });
+  }
+  setStarted(started) {
+    this.sendMessage('toggle', { started });
+    this.started = started;
+    this.onToggle?.(started);
+  }
+  start() {
+    logger('[cyclist] start');
+    this.setStarted(true);
+  }
+  stop() {
+    this.worker_time_dif = null;
+    logger('[cyclist] stop');
+    this.setStarted(false);
+  }
+  setPattern(pat, autostart = false) {
+    this.pattern = pat;
+    if (autostart && !this.started) {
+      this.start();
+    }
+  }
+
+  log(begin, end, haps) {
+    const onsets = haps.filter((h) => h.hasOnset());
+    console.log(`${begin.toFixed(4)} - ${end.toFixed(4)} ${Array(onsets.length).fill('I').join('')}`);
+  }
+}
@@ -1,12 +1,11 @@
 {
  "name": "@strudel/core",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Port of Tidal Cycles to JavaScript",
  "main": "index.mjs",
  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "test": "vitest run",
@@ -1,3 +1,4 @@
+import { NeoCyclist } from './neocyclist.mjs';
 import { Cyclist } from './cyclist.mjs';
 import { evaluate as _evaluate } from './evaluate.mjs';
 import { logger } from './logger.mjs';
@@ -6,9 +7,7 @@ import { evalScope } from './evaluate.mjs';
 import { register, Pattern, isPattern, silence, stack } from './pattern.mjs';

 export function repl({
-  interval,
  defaultOutput,
-  onSchedulerError,
  onEvalError,
  beforeEval,
  afterEval,
@@ -17,6 +16,9 @@ export function repl({
  onToggle,
  editPattern,
  onUpdateState,
+  sync = false,
+  setInterval,
+  clearInterval,
 }) {
  const state = {
    schedulerError: undefined,
@@ -37,21 +39,27 @@ export function repl({
    onUpdateState?.(state);
  };

-  const scheduler = new Cyclist({
-    interval,
+  const schedulerOptions = {
    onTrigger: getTrigger({ defaultOutput, getTime }),
-    onError: onSchedulerError,
    getTime,
    onToggle: (started) => {
      updateState({ started });
      onToggle?.(started);
    },
-  });
+    setInterval,
+    clearInterval,
+  };
+
+  // NeoCyclist uses a shared worker to communicate between instances, which is not supported on mobile chrome
+  const scheduler =
+    sync && typeof SharedWorker != 'undefined' ? new NeoCyclist(schedulerOptions) : new Cyclist(schedulerOptions);
  let pPatterns = {};
+  let anonymousIndex = 0;
  let allTransform;

  const hush = function () {
    pPatterns = {};
+    anonymousIndex = 0;
    allTransform = undefined;
    return silence;
  };
@@ -76,6 +84,15 @@ export function repl({
  // set pattern methods that use this repl via closure
  const injectPatternMethods = () => {
    Pattern.prototype.p = function (id) {
+      if (id.startsWith('_') || id.endsWith('_')) {
+        // allows muting a pattern x with x_ or _x
+        return silence;
+      }
+      if (id === '$') {
+        // allows adding anonymous patterns with $:
+        id = `$${anonymousIndex}`;
+        anonymousIndex++;
+      }
      pPatterns[id] = this;
      return this;
    };
@@ -104,7 +121,7 @@ export function repl({
    const cpm = register('cpm', function (cpm, pat) {
      return pat._fast(cpm / 60 / scheduler.cps);
    });
-    evalScope({
+    return evalScope({
      all,
      hush,
      cpm,
@@ -121,7 +138,7 @@ export function repl({
    }
    try {
      updateState({ code, pending: true });
-      injectPatternMethods();
+      await injectPatternMethods();
      await beforeEval?.({ code });
      shouldHush && hush();
      let { pattern, meta } = await _evaluate(code, transpiler);
@@ -150,6 +167,7 @@ export function repl({
      return pattern;
    } catch (err) {
      logger(`[eval] error: ${err.message}`, 'error');
+      console.error(err);
      updateState({ evalError: err, pending: false });
      onEvalError?.(err);
    }
@@ -160,14 +178,15 @@ export function repl({

 export const getTrigger =
  ({ getTime, defaultOutput }) =>
-  async (hap, deadline, duration, cps) => {
+  async (hap, deadline, duration, cps, t) => {
+    // TODO: get rid of deadline after https://github.com/tidalcycles/strudel/pull/1004
    try {
      if (!hap.context.onTrigger || !hap.context.dominantTrigger) {
-        await defaultOutput(hap, deadline, duration, cps);
+        await defaultOutput(hap, deadline, duration, cps, t);
      }
      if (hap.context.onTrigger) {
        // call signature of output / onTrigger is different...
-        await hap.context.onTrigger(getTime() + deadline, hap, getTime(), cps);
+        await hap.context.onTrigger(getTime() + deadline, hap, getTime(), cps, t);
      }
    } catch (err) {
      logger(`[cyclist] error: ${err.message}`, 'error');
@@ -143,7 +143,24 @@ export const rand = signal(timeToRand);
 export const rand2 = rand.toBipolar();

 export const _brandBy = (p) => rand.fmap((x) => x < p);
+
+/**
+ * A continuous pattern of 0 or 1 (binary random), with a probability for the value being 1
+ *
+ * @name brandBy
+ * @param {number} probability - a number between 0 and 1
+ * @example
+ * s("hh*10").pan(brandBy(0.2))
+ */
 export const brandBy = (pPat) => reify(pPat).fmap(_brandBy).innerJoin();
+
+/**
+ * A continuous pattern of 0 or 1 (binary random)
+ *
+ * @name brand
+ * @example
+ * s("hh*10").pan(brand)
+ */
 export const brand = _brandBy(0.5);

 export const _irand = (i) => rand.fmap((x) => Math.trunc(x * i));
@@ -244,9 +261,68 @@ export const pickmodF = register('pickmodF', function (lookup, funcs, pat) {
  return pat.apply(pickmod(lookup, funcs));
 });

+/** * Similar to `pick`, but it applies an outerJoin instead of an innerJoin.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickOut = register('pickOut', function (lookup, pat) {
+  return _pick(lookup, pat, false).outerJoin();
+});
+
+/** * The same as `pickOut`, but if you pick a number greater than the size of the list,
+ * it wraps around, rather than sticking at the maximum value.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickmodOut = register('pickmodOut', function (lookup, pat) {
+  return _pick(lookup, pat, true).outerJoin();
+});
+
+/** * Similar to `pick`, but the choosen pattern is restarted when its index is triggered.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickRestart = register('pickRestart', function (lookup, pat) {
+  return _pick(lookup, pat, false).restartJoin();
+});
+
+/** * The same as `pickRestart`, but if you pick a number greater than the size of the list,
+ * it wraps around, rather than sticking at the maximum value.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickmodRestart = register('pickmodRestart', function (lookup, pat) {
+  return _pick(lookup, pat, true).restartJoin();
+});
+
+/** * Similar to `pick`, but the choosen pattern is reset when its index is triggered.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickReset = register('pickReset', function (lookup, pat) {
+  return _pick(lookup, pat, false).resetJoin();
+});
+
+/** * The same as `pickReset`, but if you pick a number greater than the size of the list,
+ * it wraps around, rather than sticking at the maximum value.
+ * @param {Pattern} pat
+ * @param {*} xs
+ * @returns {Pattern}
+ */
+export const pickmodReset = register('pickmodReset', function (lookup, pat) {
+  return _pick(lookup, pat, true).resetJoin();
+});
+
 /**
 /** * Picks patterns (or plain values) either from a list (by index) or a lookup table (by name).
 * Similar to `pick`, but cycles are squeezed into the target ('inhabited') pattern.
+ * @name inhabit
+ * @synonyms pickSqueeze
 * @param {Pattern} pat
 * @param {*} xs
 * @returns {Pattern}
@@ -257,21 +333,23 @@ export const pickmodF = register('pickmodF', function (lookup, funcs, pat) {
 * @example
 * s("a@2 [a b] a".inhabit({a: "bd(3,8)", b: "sd sd"})).slow(4)
 */
-export const inhabit = register('inhabit', function (lookup, pat) {
-  return _pick(lookup, pat, true).squeezeJoin();
+export const { inhabit, pickSqueeze } = register(['inhabit', 'pickSqueeze'], function (lookup, pat) {
+  return _pick(lookup, pat, false).squeezeJoin();
 });

 /** * The same as `inhabit`, but if you pick a number greater than the size of the list,
 * it wraps around, rather than sticking at the maximum value.
 * For example, if you pick the fifth pattern of a list of three, you'll get the
 * second one.
+ * @name inhabitmod
+ * @synonyms pickmodSqueeze
 * @param {Pattern} pat
 * @param {*} xs
 * @returns {Pattern}
 */

-export const inhabitmod = register('inhabit', function (lookup, pat) {
-  return _pick(lookup, pat, false).squeezeJoin();
+export const { inhabitmod, pickmodSqueeze } = register(['inhabitmod', 'pickmodSqueeze'], function (lookup, pat) {
+  return _pick(lookup, pat, true).squeezeJoin();
 });

 /**
@@ -336,6 +414,8 @@ export const chooseInWith = (pat, xs) => {
 * Chooses randomly from the given list of elements.
 * @param  {...any} xs values / patterns to choose from.
 * @returns {Pattern} - a continuous pattern.
+ * @example
+ * note("c2 g2!2 d2 f1").s(choose("sine", "triangle", "bd:6"))
 */
 export const choose = (...xs) => chooseWith(rand, xs);

@@ -362,6 +442,7 @@ Pattern.prototype.choose2 = function (...xs) {

 /**
 * Picks one of the elements at random each cycle.
+ * @synonyms randcat
 * @returns {Pattern}
 * @example
 * chooseCycles("bd", "hh", "sd").s().fast(8)
@@ -390,9 +471,27 @@ const _wchooseWith = function (pat, ...pairs) {

 const wchooseWith = (...args) => _wchooseWith(...args).outerJoin();

+/**
+ * Chooses randomly from the given list of elements by giving a probability to each element
+ * @param {...any} pairs arrays of value and weight
+ * @returns {Pattern} - a continuous pattern.
+ * @example
+ * note("c2 g2!2 d2 f1").s(wchoose(["sine",10], ["triangle",1], ["bd:6",1]))
+ */
 export const wchoose = (...pairs) => wchooseWith(rand, ...pairs);

-export const wchooseCycles = (...pairs) => _wchooseWith(rand, ...pairs).innerJoin();
+/**
+ * Picks one of the elements at random each cycle by giving a probability to each element
+ * @synonyms wrandcat
+ * @returns {Pattern}
+ * @example
+ * wchooseCycles(["bd",10], ["hh",1], ["sd",1]).s().fast(8)
+ * @example
+ * wchooseCycles(["bd bd bd",5], ["hh hh hh",3], ["sd sd sd",1]).fast(4).s()
+ */
+export const wchooseCycles = (...pairs) => _wchooseWith(rand.segment(1), ...pairs).innerJoin();
+
+export const wrandcat = wchooseCycles;

 // this function expects pat to be a pattern of floats...
 export const perlinWith = (pat) => {
@@ -462,6 +561,11 @@ export const degrade = register('degrade', (pat) => pat._degradeBy(0.5));
 * @returns Pattern
 * @example
 * s("hh*8").undegradeBy(0.2)
+ * @example
+ * s("hh*10").layer(
+ *   x => x.degradeBy(0.2).pan(0),
+ *   x => x.undegradeBy(0.8).pan(1)
+ * )
 */
 export const undegradeBy = register('undegradeBy', function (x, pat) {
  return pat._degradeByWith(
@@ -470,6 +574,21 @@ export const undegradeBy = register('undegradeBy', function (x, pat) {
  );
 });

+/**
+ * Inverse of `degrade`: Randomly removes 50% of events from the pattern. Shorthand for `.undegradeBy(0.5)`
+ * Events that would be removed by degrade are let through by undegrade and vice versa (see second example).
+ *
+ * @name undegrade
+ * @memberof Pattern
+ * @returns Pattern
+ * @example
+ * s("hh*8").undegrade()
+ * @example
+ * s("hh*10").layer(
+ *   x => x.degrade().pan(0),
+ *   x => x.undegrade().pan(1)
+ * )
+ */
 export const undegrade = register('undegrade', (pat) => pat._undegradeBy(0.5));

 /**
@@ -4,25 +4,39 @@ Copyright (C) 2023 Strudel contributors - see <https://github.com/tidalcycles/st
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-import controls from '../controls.mjs';
+import { s, pan } from '../controls.mjs';
 import { mini } from '../../mini/mini.mjs';
 import { describe, it, expect } from 'vitest';
+import Fraction from '../fraction.mjs';

 describe('controls', () => {
  it('should support controls', () => {
-    expect(controls.s('bd').firstCycleValues).toEqual([{ s: 'bd' }]);
+    expect(s('bd').firstCycleValues).toEqual([{ s: 'bd' }]);
  });
  it('should support compound controls', () => {
-    expect(controls.s(mini('bd:3')).firstCycleValues).toEqual([{ s: 'bd', n: 3 }]);
-    expect(controls.s(mini('bd:3 sd:4:1.4')).firstCycleValues).toEqual([
+    expect(s(mini('bd:3')).firstCycleValues).toEqual([{ s: 'bd', n: 3 }]);
+    expect(s(mini('bd:3 sd:4:1.4')).firstCycleValues).toEqual([
      { s: 'bd', n: 3 },
      { s: 'sd', n: 4, gain: 1.4 },
    ]);
  });
  it('should support ignore extra elements in compound controls', () => {
-    expect(controls.s(mini('bd:3:0.4 sd:4:0.5:3:17')).firstCycleValues).toEqual([
+    expect(s(mini('bd:3:0.4 sd:4:0.5:3:17')).firstCycleValues).toEqual([
      { s: 'bd', n: 3, gain: 0.4 },
      { s: 'sd', n: 4, gain: 0.5 },
    ]);
  });
+  it('should support nested controls', () => {
+    expect(s(mini('bd').pan(1)).firstCycleValues).toEqual([{ s: 'bd', pan: 1 }]);
+    expect(s(mini('bd:1').pan(1)).firstCycleValues).toEqual([{ s: 'bd', n: 1, pan: 1 }]);
+  });
+  it('preserves tactus of the left pattern', () => {
+    expect(s(mini('bd cp mt').pan(mini('1 2 3 4'))).tactus).toEqual(Fraction(3));
+  });
+  it('preserves tactus of the right pattern for .out', () => {
+    expect(s(mini('bd cp mt').set.out(pan(mini('1 2 3 4')))).tactus).toEqual(Fraction(4));
+  });
+  it('combines tactus of the pattern for .mix as lcm', () => {
+    expect(s(mini('bd cp mt').set.mix(pan(mini('1 2 3 4')))).tactus).toEqual(Fraction(12));
+  });
 });
@@ -21,8 +21,8 @@ import {
  cat,
  sequence,
  palindrome,
-  polymeter,
-  polymeterSteps,
+  s_polymeter,
+  s_polymeterSteps,
  polyrhythm,
  silence,
  fast,
@@ -47,13 +47,17 @@ import {
  time,
  run,
  pick,
+  stackLeft,
+  stackRight,
+  stackCentre,
+  s_cat,
+  calculateTactus,
 } from '../index.mjs';

 import { steady } from '../signal.mjs';

-import controls from '../controls.mjs';
+import { n, s } from '../controls.mjs';

-const { n, s } = controls;
 const st = (begin, end) => new State(ts(begin, end));
 const ts = (begin, end) => new TimeSpan(Fraction(begin), Fraction(end));
 const hap = (whole, part, value, context = {}) => new Hap(whole, part, value, context);
@@ -182,18 +186,18 @@ describe('Pattern', () => {
        new Hap(ts(1 / 2, 2 / 3), ts(1 / 2, 2 / 3), 7),
      ]);
    });
-    it('can Trig() structure', () => {
+    it('can Reset() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .add.trig(20, 30)
+          .add.reset(20, 30)
          .early(2),
        sequence(26, 27, 36, 37),
      );
    });
-    it('can Trigzero() structure', () => {
+    it('can Restart() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .add.trigzero(20, 30)
+          .add.restart(20, 30)
          .early(2),
        sequence(21, 22, 31, 32),
      );
@@ -234,18 +238,18 @@ describe('Pattern', () => {
        new Hap(ts(1 / 2, 2 / 3), ts(1 / 2, 2 / 3), 2),
      ]);
    });
-    it('can Trig() structure', () => {
+    it('can Reset() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .keep.trig(20, 30)
+          .keep.reset(20, 30)
          .early(2),
        sequence(6, 7, 6, 7),
      );
    });
-    it('can Trigzero() structure', () => {
+    it('can Restart() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .keep.trigzero(20, 30)
+          .keep.restart(20, 30)
          .early(2),
        sequence(1, 2, 1, 2),
      );
@@ -280,18 +284,18 @@ describe('Pattern', () => {
        new Hap(ts(1 / 2, 2 / 3), ts(1 / 2, 2 / 3), 2),
      ]);
    });
-    it('can Trig() structure', () => {
+    it('can Reset() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .keepif.trig(false, true)
+          .keepif.reset(false, true)
          .early(2),
        sequence(silence, silence, 6, 7),
      );
    });
-    it('can Trigzero() structure', () => {
+    it('can Restart() structure', () => {
      sameFirst(
        slowcat(sequence(1, 2, 3, 4), 5, sequence(6, 7, 8, 9), 10)
-          .keepif.trigzero(false, true)
+          .keepif.restart(false, true)
          .early(2),
        sequence(silence, silence, 1, 2),
      );
@@ -604,16 +608,19 @@ describe('Pattern', () => {
      );
    });
  });
-  describe('polymeter()', () => {
-    it('Can layer up cycles, stepwise', () => {
-      expect(polymeterSteps(3, ['d', 'e']).firstCycle()).toStrictEqual(
+  describe('s_polymeter()', () => {
+    it('Can layer up cycles, stepwise, with lists', () => {
+      expect(s_polymeterSteps(3, ['d', 'e']).firstCycle()).toStrictEqual(
        fastcat(pure('d'), pure('e'), pure('d')).firstCycle(),
      );

-      expect(polymeter(['a', 'b', 'c'], ['d', 'e']).fast(2).firstCycle()).toStrictEqual(
+      expect(s_polymeter(['a', 'b', 'c'], ['d', 'e']).fast(2).firstCycle()).toStrictEqual(
        stack(sequence('a', 'b', 'c', 'a', 'b', 'c'), sequence('d', 'e', 'd', 'e', 'd', 'e')).firstCycle(),
      );
    });
+    it('Can layer up cycles, stepwise, with weighted patterns', () => {
+      sameFirst(s_polymeterSteps(3, sequence('a', 'b')).fast(2), sequence('a', 'b', 'a', 'b', 'a', 'b'));
+    });
  });

  describe('firstOf()', () => {
@@ -1117,4 +1124,89 @@ describe('Pattern', () => {
      );
    });
  });
+  describe('tactus', () => {
+    it('Is correctly preserved/calculated through transformations', () => {
+      expect(sequence(0, 1, 2, 3).linger(4).tactus).toStrictEqual(Fraction(4));
+      expect(sequence(0, 1, 2, 3).iter(4).tactus).toStrictEqual(Fraction(4));
+      expect(sequence(0, 1, 2, 3).fast(4).tactus).toStrictEqual(Fraction(4));
+      expect(sequence(0, 1, 2, 3).hurry(4).tactus).toStrictEqual(Fraction(4));
+      expect(sequence(0, 1, 2, 3).rev().tactus).toStrictEqual(Fraction(4));
+      expect(sequence(1).segment(10).tactus).toStrictEqual(Fraction(10));
+      expect(sequence(1, 0, 1).invert().tactus).toStrictEqual(Fraction(3));
+      expect(sequence({ s: 'bev' }, { s: 'amenbreak' }).chop(4).tactus).toStrictEqual(Fraction(8));
+      expect(sequence({ s: 'bev' }, { s: 'amenbreak' }).striate(4).tactus).toStrictEqual(Fraction(8));
+      expect(sequence({ s: 'bev' }, { s: 'amenbreak' }).slice(4, sequence(0, 1, 2, 3)).tactus).toStrictEqual(
+        Fraction(4),
+      );
+      expect(sequence({ s: 'bev' }, { s: 'amenbreak' }).splice(4, sequence(0, 1, 2, 3)).tactus).toStrictEqual(
+        Fraction(4),
+      );
+      expect(sequence({ n: 0 }, { n: 1 }, { n: 2 }).chop(4).tactus).toStrictEqual(Fraction(12));
+      expect(
+        pure((x) => x + 1)
+          .setTactus(3)
+          .appBoth(pure(1).setTactus(2)).tactus,
+      ).toStrictEqual(Fraction(6));
+      expect(
+        pure((x) => x + 1)
+          .setTactus(undefined)
+          .appBoth(pure(1).setTactus(2)).tactus,
+      ).toStrictEqual(Fraction(2));
+      expect(
+        pure((x) => x + 1)
+          .setTactus(3)
+          .appBoth(pure(1).setTactus(undefined)).tactus,
+      ).toStrictEqual(Fraction(3));
+      expect(stack(fastcat(0, 1, 2), fastcat(3, 4)).tactus).toStrictEqual(Fraction(6));
+      expect(stack(fastcat(0, 1, 2), fastcat(3, 4).setTactus(undefined)).tactus).toStrictEqual(Fraction(3));
+      expect(stackLeft(fastcat(0, 1, 2, 3), fastcat(3, 4)).tactus).toStrictEqual(Fraction(4));
+      expect(stackRight(fastcat(0, 1, 2), fastcat(3, 4)).tactus).toStrictEqual(Fraction(3));
+      // maybe this should double when they are either all even or all odd
+      expect(stackCentre(fastcat(0, 1, 2), fastcat(3, 4)).tactus).toStrictEqual(Fraction(3));
+      expect(fastcat(0, 1).ply(3).tactus).toStrictEqual(Fraction(6));
+      expect(fastcat(0, 1).setTactus(undefined).ply(3).tactus).toStrictEqual(undefined);
+      expect(fastcat(0, 1).fast(3).tactus).toStrictEqual(Fraction(2));
+      expect(fastcat(0, 1).setTactus(undefined).fast(3).tactus).toStrictEqual(undefined);
+    });
+  });
+  describe('s_cat', () => {
+    it('can cat', () => {
+      expect(sameFirst(s_cat(fastcat(0, 1, 2, 3), fastcat(4, 5)), fastcat(0, 1, 2, 3, 4, 5)));
+      expect(sameFirst(s_cat(pure(1), pure(2), pure(3)), fastcat(1, 2, 3)));
+    });
+    it('calculates undefined tactuses as the average', () => {
+      expect(sameFirst(s_cat(pure(1), pure(2), pure(3).setTactus(undefined)), fastcat(1, 2, 3)));
+    });
+  });
+  describe('s_taper', () => {
+    it('can taper', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_taper(1, 5), sequence(0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0)));
+    });
+    it('can taper backwards', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_taper(-1, 5), sequence(0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4)));
+    });
+  });
+  describe('s_add and s_sub', () => {
+    it('can add from the left', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_add(2), sequence(0, 1)));
+    });
+    it('can sub to the left', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_sub(2), sequence(0, 1, 2)));
+    });
+    it('can add from the right', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_add(-2), sequence(3, 4)));
+    });
+    it('can sub to the right', () => {
+      expect(sameFirst(sequence(0, 1, 2, 3, 4).s_sub(-2), sequence(2, 3, 4)));
+    });
+    it('can subtract nothing', () => {
+      expect(sameFirst(pure('a').s_sub(0), pure('a')));
+    });
+    it('can subtract nothing, repeatedly', () => {
+      expect(sameFirst(pure('a').s_sub(0, 0), fastcat('a', 'a')));
+      for (var i = 0; i < 100; ++i) {
+        expect(sameFirst(pure('a').s_sub(...Array(i).fill(0)), fastcat(...Array(i).fill('a'))));
+      }
+    });
+  });
 });
@@ -6,8 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th

 import { describe, it, expect } from 'vitest';
 import { map, valued, mul } from '../value.mjs';
-import controls from '../controls.mjs';
-const { n } = controls;
+import { n } from '../controls.mjs';

 describe('Value', () => {
  it('unionWith', () => {
@@ -23,8 +22,4 @@ describe('Value', () => {
    expect(valued(mul).ap(3).ap(3).value).toEqual(9);
    expect(valued(3).mul(3).value).toEqual(9);
  });
-  it('union bare numbers for numeral props', () => {
-    expect(n(3).cutoff(500).add(10).firstCycleValues).toEqual([{ n: 13, cutoff: 510 }]);
-    expect(n(3).cutoff(500).mul(2).firstCycleValues).toEqual([{ n: 6, cutoff: 1000 }]);
-  });
 });
@@ -4,19 +4,6 @@ Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/st
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-import { getTime } from './time.mjs';
-
-function frame(callback) {
-  if (window.strudelAnimation) {
-    cancelAnimationFrame(window.strudelAnimation);
-  }
-  const animate = (animationTime) => {
-    callback(animationTime, getTime());
-    window.strudelAnimation = requestAnimationFrame(animate);
-  };
-  requestAnimationFrame(animate);
-}
-
 export const backgroundImage = function (src, animateOptions = {}) {
  const container = document.getElementById('code');
  const bg = 'background-image:url(' + src + ');background-size:contain;';
@@ -35,11 +22,6 @@ export const backgroundImage = function (src, animateOptions = {}) {
  if (funcOptions.length === 0) {
    return;
  }
-  frame((_, t) =>
-    funcOptions.forEach(([option, value]) => {
-      handleOption(option, value(t));
-    }),
-  );
 };

 export const cleanupUi = () => {
@@ -61,6 +61,11 @@ export const valueToMidi = (value, fallbackValue) => {
  return fallbackValue;
 };

+// used to schedule external event like midi and osc out
+export const getEventOffsetMs = (targetTimeSeconds, currentTimeSeconds) => {
+  return (targetTimeSeconds - currentTimeSeconds) * 1000;
+};
+
 /**
 * @deprecated does not appear to be referenced or invoked anywhere in the codebase
 * @noAutocomplete
@@ -231,6 +236,14 @@ export const splitAt = function (index, value) {

 export const zipWith = (f, xs, ys) => xs.map((n, i) => f(n, ys[i]));

+export const pairs = function (xs) {
+  const result = [];
+  for (let i = 0; i < xs.length - 1; ++i) {
+    result.push([xs[i], xs[i + 1]]);
+  }
+  return result;
+};
+
 export const clamp = (num, min, max) => Math.min(Math.max(num, min), max);

 /* solmization, not used yet */
@@ -289,6 +302,30 @@ export const sol2note = (n, notation = 'letters') => {
  return note + oct;
 };

+// Remove duplicates from list
+export function uniq(a) {
+  var seen = {};
+  return a.filter(function (item) {
+    return seen.hasOwn(item) ? false : (seen[item] = true);
+  });
+}
+
+// Remove duplicates from list, sorting in the process. Mutates argument!
+export function uniqsort(a) {
+  return a.sort().filter(function (item, pos, ary) {
+    return !pos || item != ary[pos - 1];
+  });
+}
+
+// rational version
+export function uniqsortr(a) {
+  return a
+    .sort((x, y) => x.compare(y))
+    .filter(function (item, pos, ary) {
+      return !pos || item.ne(ary[pos - 1]);
+    });
+}
+
 // code hashing helpers

 export function unicodeToBase64(text) {
@@ -323,3 +360,23 @@ export function objectMap(obj, fn) {
  }
  return Object.fromEntries(Object.entries(obj).map(([k, v], i) => [k, fn(v, k, i)]));
 }
+
+// Floating point versions, see Fraction for rational versions
+// // greatest common divisor
+// export const gcd = function (x, y, ...z) {
+//   if (!y && z.length > 0) {
+//     return gcd(x, ...z);
+//   }
+//   if (!y) {
+//     return x;
+//   }
+//   return gcd(y, x % y, ...z);
+// };
+
+// // lowest common multiple
+// export const lcm = function (x, y, ...z) {
+//   if (z.length == 0) {
+//     return (x * y) / gcd(x, y);
+//   }
+//   return lcm((x * y) / gcd(x, y), ...z);
+// };
@@ -5,14 +5,13 @@ This program is free software: you can redistribute it and/or modify it under th
 */

 import { curry } from './util.mjs';
+import { logger } from './logger.mjs';

 export function unionWithObj(a, b, func) {
-  if (typeof b?.value === 'number') {
-    // https://github.com/tidalcycles/strudel/issues/262
-    const numKeys = Object.keys(a).filter((k) => typeof a[k] === 'number');
-    const numerals = Object.fromEntries(numKeys.map((k) => [k, b.value]));
-    b = Object.assign(b, numerals);
-    delete b.value;
+  if (b?.value !== undefined && Object.keys(b).length === 1) {
+    // https://github.com/tidalcycles/strudel/issues/1026
+    logger(`[warn]: Can't do arithmetic on control pattern.`);
+    return a;
  }
  const common = Object.keys(a).filter((k) => Object.keys(b).includes(k));
  return Object.assign({}, a, b, Object.fromEntries(common.map((k) => [k, func(a[k], b[k])])));
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -7,6 +7,9 @@ function createClock(
  duration = 0.05, // duration of each cycle
  interval = 0.1, // interval between callbacks
  overlap = 0.1, // overlap between callbacks
+  setInterval = globalThis.setInterval,
+  clearInterval = globalThis.clearInterval,
+  round = true,
 ) {
  let tick = 0; // counts callbacks
  let phase = 0; // next callback time
@@ -22,9 +25,8 @@ function createClock(
    }
    // callback as long as we're inside the lookahead
    while (phase < lookahead) {
-      phase = Math.round(phase * precision) / precision;
-      phase >= t && callback(phase, duration, tick);
-      phase < t && console.log('TOO LATE', phase); // what if latency is added from outside?
+      phase = round ? Math.round(phase * precision) / precision : phase;
+      callback(phase, duration, tick, t); // callback has to skip / handle phase < t!
      phase += duration; // increment phase by duration
      tick++;
    }
@@ -35,7 +37,10 @@ function createClock(
    onTick();
    intervalID = setInterval(onTick, interval * 1000);
  };
-  const clear = () => intervalID !== undefined && clearInterval(intervalID);
+  const clear = () => {
+    intervalID !== undefined && clearInterval(intervalID);
+    intervalID = undefined;
+  };
  const pause = () => clear();
  const stop = () => {
    tick = 0;
@@ -23,7 +23,7 @@ export const csound = register('csound', (instrument, pat) => {
  instrument = instrument || 'triangle';
  init(); // not async to support csound inside other patterns + to be able to call pattern methods after it
  // TODO: find a alternative way to wait for csound to load (to wait with first time playback)
-  return pat.onTrigger((time, hap) => {
+  return pat.onTrigger((time_deprecate, hap, currentTime, _cps, targetTime) => {
    if (!_csound) {
      logger('[csound] not loaded yet', 'warning');
      return;
@@ -38,9 +38,11 @@ export const csound = register('csound', (instrument, pat) => {
      .join('/');
    // TODO: find out how to send a precise ctx based time
    // http://www.csounds.com/manual/html/i.html
+    const timeOffset = targetTime - currentTime; // latency ?
+    //const timeOffset = time_deprecate - getAudioContext().currentTime
    const params = [
      `"${instrument}"`, // p1: instrument name
-      time - getAudioContext().currentTime, //.toFixed(precision), // p2: starting time in arbitrary unit called beats
+      timeOffset, // p2: starting time in arbitrary unit called beats
      hap.duration + 0, // p3: duration in beats
      // instrument specific params:
      freq, //.toFixed(precision), // p4: frequency
@@ -152,12 +154,14 @@ export const csoundm = register('csoundm', (instrument, pat) => {
    const p2 = tidal_time - getAudioContext().currentTime;
    const p3 = hap.duration.valueOf() + 0;
    const frequency = getFrequency(hap);
+    let { gain = 1, velocity = 0.9 } = hap.value;
+    velocity = gain * velocity;
    // Translate frequency to MIDI key number _without_ rounding.
    const C4 = 261.62558;
    let octave = Math.log(frequency / C4) / Math.log(2.0) + 8.0;
    const p4 = octave * 12.0 - 36.0;
    // We prefer floating point precision, but over the MIDI range [0, 127].
-    const p5 = 127 * (hap.context?.velocity ?? 0.9);
+    const p5 = 127 * velocity;
    // The Strudel controls as a string.
    const p6 = Object.entries({ ...hap.value, frequency })
      .flat()
@@ -1,11 +1,11 @@
 {
  "name": "@strudel/csound",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "csound bindings for strudel",
  "main": "index.mjs",
+  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "build": "vite build",
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -1,16 +1,18 @@
 import { Invoke } from './utils.mjs';
-import { Pattern, noteToMidi } from '@strudel/core';
+import { Pattern, getEventOffsetMs, noteToMidi } from '@strudel/core';

 const ON_MESSAGE = 0x90;
 const OFF_MESSAGE = 0x80;
 const CC_MESSAGE = 0xb0;

 Pattern.prototype.midi = function (output) {
-  return this.onTrigger((time, hap, currentTime) => {
-    const { note, nrpnn, nrpv, ccn, ccv } = hap.value;
-    const offset = (time - currentTime) * 1000;
-    const velocity = Math.floor((hap.context?.velocity ?? 0.9) * 100); // TODO: refactor velocity
-    const duration = Math.floor(hap.duration.valueOf() * 1000 - 10);
+  return this.onTrigger((time_deprecate, hap, currentTime, cps, targetTime) => {
+    let { note, nrpnn, nrpv, ccn, ccv, velocity = 0.9, gain = 1 } = hap.value;
+    //magic number to get audio engine to line up, can probably be calculated somehow
+    const latencyMs = 34;
+    const offset = getEventOffsetMs(targetTime, currentTime) + latencyMs;
+    velocity = Math.floor(gain * velocity * 100);
+    const duration = Math.floor((hap.duration.valueOf() / cps) * 1000 - 10);
    const roundedOffset = Math.round(offset);
    const midichan = (hap.value.midichan ?? 1) - 1;
    const requestedport = output ?? 'IAC';
@@ -1,8 +1,8 @@
-import { parseNumeral, Pattern } from '@strudel/core';
+import { parseNumeral, Pattern, getEventOffsetMs } from '@strudel/core';
 import { Invoke } from './utils.mjs';

 Pattern.prototype.osc = function () {
-  return this.onTrigger(async (time, hap, currentTime, cps = 1) => {
+  return this.onTrigger(async (time, hap, currentTime, cps = 1, targetTime) => {
    hap.ensureObjectValue();
    const cycle = hap.wholeOrPart().begin.valueOf();
    const delta = hap.duration.valueOf();
@@ -13,7 +13,7 @@ Pattern.prototype.osc = function () {

    const params = [];

-    const timestamp = Math.round(Date.now() + (time - currentTime) * 1000);
+    const timestamp = Math.round(Date.now() + getEventOffsetMs(targetTime, currentTime));

    Object.keys(controls).forEach((key) => {
      const val = controls[key];
@@ -0,0 +1,9 @@
+# @strudel/canvas
+
+Helpers for drawing with the Canvas API and Strudel
+
+## Install
+
+```sh
+npm i @strudel/canvas --save
+```
@@ -1,13 +1,14 @@
-import { Pattern, getDrawContext, silence, register, pure } from './index.mjs';
-import controls from './controls.mjs'; // do not import from index.mjs as it breaks for some reason..
-const { createParams } = controls;
+import { Pattern, silence, register, pure, createParams } from '@strudel/core';
+import { getDrawContext } from './draw.mjs';

 let clearColor = '#22222210';

 Pattern.prototype.animate = function ({ callback, sync = false, smear = 0.5 } = {}) {
  window.frame && cancelAnimationFrame(window.frame);
  const ctx = getDrawContext();
-  const { clientWidth: ww, clientHeight: wh } = ctx.canvas;
+  let { clientWidth: ww, clientHeight: wh } = ctx.canvas;
+  ww *= window.devicePixelRatio;
+  wh *= window.devicePixelRatio;
  let smearPart = smear === 0 ? '99' : Number((1 - smear) * 100).toFixed(0);
  smearPart = smearPart.length === 1 ? `0${smearPart}` : smearPart;
  clearColor = `#200010${smearPart}`;
@@ -1,80 +1,88 @@
 /*
 draw.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/draw.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/canvas/draw.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-import { Pattern, getTime, State, TimeSpan } from './index.mjs';
+import { Pattern, getTime, State, TimeSpan } from '@strudel/core';

-export const getDrawContext = (id = 'test-canvas') => {
+export const getDrawContext = (id = 'test-canvas', options) => {
+  let { contextType = '2d', pixelated = false, pixelRatio = window.devicePixelRatio } = options || {};
  let canvas = document.querySelector('#' + id);
  if (!canvas) {
-    const scale = 2; // 2 = crisp on retina screens
    canvas = document.createElement('canvas');
    canvas.id = id;
-    canvas.width = window.innerWidth * scale;
-    canvas.height = window.innerHeight * scale;
+    canvas.width = window.innerWidth * pixelRatio;
+    canvas.height = window.innerHeight * pixelRatio;
    canvas.style = 'pointer-events:none;width:100%;height:100%;position:fixed;top:0;left:0';
+    pixelated && (canvas.style.imageRendering = 'pixelated');
    document.body.prepend(canvas);
    let timeout;
    window.addEventListener('resize', () => {
      timeout && clearTimeout(timeout);
      timeout = setTimeout(() => {
-        canvas.width = window.innerWidth * scale;
-        canvas.height = window.innerHeight * scale;
+        canvas.width = window.innerWidth * pixelRatio;
+        canvas.height = window.innerHeight * pixelRatio;
      }, 200);
    });
  }
-  return canvas.getContext('2d');
+  return canvas.getContext(contextType);
 };

-Pattern.prototype.draw = function (callback, { from, to, onQuery } = {}) {
+let animationFrames = {};
+function stopAnimationFrame(id) {
+  if (animationFrames[id] !== undefined) {
+    cancelAnimationFrame(animationFrames[id]);
+    delete animationFrames[id];
+  }
+}
+function stopAllAnimations() {
+  Object.keys(animationFrames).forEach((id) => stopAnimationFrame(id));
+}
+
+let memory = {};
+Pattern.prototype.draw = function (fn, options) {
  if (typeof window === 'undefined') {
    return this;
  }
-  if (window.strudelAnimation) {
-    cancelAnimationFrame(window.strudelAnimation);
-  }
-  const ctx = getDrawContext();
-  let cycle,
-    events = [];
-  const animate = (time) => {
-    const t = getTime();
-    if (from !== undefined && to !== undefined) {
-      const currentCycle = Math.floor(t);
-      if (cycle !== currentCycle) {
-        cycle = currentCycle;
-        const begin = currentCycle + from;
-        const end = currentCycle + to;
-        setTimeout(() => {
-          events = this.query(new State(new TimeSpan(begin, end)))
-            .filter(Boolean)
-            .filter((event) => event.part.begin.equals(event.whole.begin));
-          onQuery?.(events);
-        }, 0);
-      }
-    }
-    callback(ctx, events, t, time);
-    window.strudelAnimation = requestAnimationFrame(animate);
+  let { id = 1, lookbehind = 0, lookahead = 0 } = options;
+  let __t = Math.max(getTime(), 0);
+  stopAnimationFrame(id);
+  lookbehind = Math.abs(lookbehind);
+  // init memory, clear future haps of old pattern
+  memory[id] = (memory[id] || []).filter((h) => !h.isInFuture(__t));
+  let newFuture = this.queryArc(__t, __t + lookahead).filter((h) => h.hasOnset());
+  memory[id] = memory[id].concat(newFuture);
+
+  let last;
+  const animate = () => {
+    const _t = getTime();
+    const t = _t + lookahead;
+    // filter out haps that are too far in the past
+    memory[id] = memory[id].filter((h) => h.isInNearPast(lookbehind, _t));
+    // begin where we left off in last frame, but max -0.1s (inactive tab throttles to 1fps)
+    let begin = Math.max(last || t, t - 1 / 10);
+    const haps = this.queryArc(begin, t).filter((h) => h.hasOnset());
+    memory[id] = memory[id].concat(haps);
+    last = t; // makes sure no haps are missed
+    fn(memory[id], _t, t, this);
+    animationFrames[id] = requestAnimationFrame(animate);
  };
-  requestAnimationFrame(animate);
+  animationFrames[id] = requestAnimationFrame(animate);
  return this;
 };

 export const cleanupDraw = (clearScreen = true) => {
  const ctx = getDrawContext();
  clearScreen && ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.width);
-  if (window.strudelAnimation) {
-    cancelAnimationFrame(window.strudelAnimation);
-  }
+  stopAllAnimations();
  if (window.strudelScheduler) {
    clearInterval(window.strudelScheduler);
  }
 };

-Pattern.prototype.onPaint = function (onPaint) {
-  // this is evil! TODO: add pattern.context
-  this.context = { onPaint };
+Pattern.prototype.onPaint = function () {
+  console.warn('[draw] onPaint was not overloaded. Some drawings might not work');
  return this;
 };

@@ -134,7 +142,7 @@ export class Drawer {
        this.lastFrame = phase;
        this.visibleHaps = (this.visibleHaps || [])
          // filter out haps that are too far in the past (think left edge of screen for pianoroll)
-          .filter((h) => h.whole?.end >= phase - lookbehind - lookahead)
+          .filter((h) => h.endClipped >= phase - lookbehind - lookahead)
          // add new haps with onset (think right edge bars scrolling in)
          .concat(haps.filter((h) => h.hasOnset()));
        const time = phase - lookahead;
@@ -175,3 +183,18 @@ export class Drawer {
    }
  }
 }
+
+export function getComputedPropertyValue(name) {
+  if (typeof window === 'undefined') {
+    return '#fff';
+  }
+  return getComputedStyle(document.documentElement).getPropertyValue(name);
+}
+
+let theme = {};
+export function getTheme() {
+  return theme;
+}
+export function setTheme(_theme) {
+  theme = _theme;
+}
@@ -0,0 +1,6 @@
+export * from './animate.mjs';
+export * from './color.mjs';
+export * from './draw.mjs';
+export * from './pianoroll.mjs';
+export * from './spiral.mjs';
+export * from './pitchwheel.mjs';
@@ -0,0 +1,37 @@
+{
+  "name": "@strudel/draw",
+  "version": "1.0.1",
+  "description": "Helpers for drawing with Strudel",
+  "main": "index.mjs",
+  "type": "module",
+  "publishConfig": {
+    "main": "dist/index.mjs"
+  },
+  "scripts": {
+    "build": "vite build",
+    "prepublishOnly": "npm run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tidalcycles/strudel.git"
+  },
+  "keywords": [
+    "titdalcycles",
+    "strudel",
+    "pattern",
+    "livecoding",
+    "algorave"
+  ],
+  "author": "Felix Roos <flix91@gmail.com>",
+  "license": "AGPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/tidalcycles/strudel/issues"
+  },
+  "homepage": "https://github.com/tidalcycles/strudel#readme",
+  "dependencies": {
+    "@strudel/core": "workspace:*"
+  },
+  "devDependencies": {
+    "vite": "^5.0.10"
+  }
+}
@@ -1,10 +1,11 @@
 /*
 pianoroll.mjs - <short description TODO>
-Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/core/pianoroll.mjs>
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/canvas/pianoroll.mjs>
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-import { Pattern, noteToMidi, getDrawContext, freqToMidi, isNote } from './index.mjs';
+import { Pattern, noteToMidi, freqToMidi } from '@strudel/core';
+import { getTheme, getDrawContext } from './draw.mjs';

 const scale = (normalized, min, max) => normalized * (max - min) + min;
 const getValue = (e) => {
@@ -18,7 +19,13 @@ const getValue = (e) => {
  }
  note = note ?? n;
  if (typeof note === 'string') {
-    return noteToMidi(note);
+    try {
+      // TODO: n(run(32)).scale("D:minor") fails when trying to query negative time..
+      return noteToMidi(note);
+    } catch (err) {
+      // console.warn(`error converting note to midi: ${err}`); // this spams to crazy
+      return 0;
+    }
  }
  if (typeof note === 'number') {
    return note;
@@ -30,25 +37,24 @@ const getValue = (e) => {
 };

 Pattern.prototype.pianoroll = function (options = {}) {
-  let { cycles = 4, playhead = 0.5, overscan = 1, hideNegative = false } = options;
+  let { cycles = 4, playhead = 0.5, overscan = 0, hideNegative = false, ctx = getDrawContext(), id = 1 } = options;

  let from = -cycles * playhead;
  let to = cycles * (1 - playhead);
-
+  const inFrame = (hap, t) => (!hideNegative || hap.whole.begin >= 0) && hap.isWithinTime(t + from, t + to);
  this.draw(
-    (ctx, haps, t) => {
-      const inFrame = (event) =>
-        (!hideNegative || event.whole.begin >= 0) && event.whole.begin <= t + to && event.endClipped >= t + from;
+    (haps, time) => {
      pianoroll({
        ...options,
-        time: t,
+        time,
        ctx,
-        haps: haps.filter(inFrame),
+        haps: haps.filter((hap) => inFrame(hap, time)),
      });
    },
    {
-      from: from - overscan,
-      to: to + overscan,
+      lookbehind: from - overscan,
+      lookahead: to + overscan,
+      id,
    },
  );
  return this;
@@ -98,11 +104,8 @@ export function pianoroll({
  flipTime = 0,
  flipValues = 0,
  hideNegative = false,
-  // inactive = '#C9E597',
-  // inactive = '#FFCA28',
-  inactive = '#7491D2',
-  active = '#FFCA28',
-  // background = '#2A3236',
+  inactive = getTheme().foreground,
+  active = getTheme().foreground,
  background = 'transparent',
  smear = 0,
  playheadColor = 'white',
@@ -121,12 +124,17 @@ export function pianoroll({
  colorizeInactive = 1,
  fontFamily,
  ctx,
+  id,
 } = {}) {
  const w = ctx.canvas.width;
  const h = ctx.canvas.height;
  let from = -cycles * playhead;
  let to = cycles * (1 - playhead);

+  if (id) {
+    haps = haps.filter((hap) => hap.hasTag(id));
+  }
+
  if (timeframeProp) {
    console.warn('timeframe is deprecated! use from/to instead');
    from = 0;
@@ -160,8 +168,13 @@ export function pianoroll({
    maxMidi = max;
    valueExtent = maxMidi - minMidi + 1;
  }
-  // foldValues = values.sort((a, b) => a - b);
-  foldValues = values.sort((a, b) => String(a).localeCompare(String(b)));
+  foldValues = values.sort((a, b) =>
+    typeof a === 'number' && typeof b === 'number'
+      ? a - b
+      : typeof a === 'number'
+        ? 1
+        : String(a).localeCompare(String(b)),
+  );
  barThickness = fold ? valueAxis / foldValues.length : valueAxis / valueExtent;
  ctx.fillStyle = background;
  ctx.globalAlpha = 1; // reset!
@@ -176,13 +189,14 @@ export function pianoroll({
    if (hideInactive && !isActive) {
      return;
    }
-    let color = event.value?.color || event.context?.color;
+    let color = event.value?.color;
    active = color || active;
    inactive = colorizeInactive ? color || inactive : inactive;
    color = isActive ? active : inactive;
    ctx.fillStyle = fillCurrent ? color : 'transparent';
    ctx.strokeStyle = color;
-    ctx.globalAlpha = event.context.velocity ?? event.value?.gain ?? 1;
+    const { velocity = 1, gain = 1 } = event.value || {};
+    ctx.globalAlpha = velocity * gain;
    const timeProgress = (event.whole.begin - (flipTime ? to : from)) / timeExtent;
    const timePx = scale(timeProgress, ...timeRange);
    let durationPx = scale(event.duration / timeExtent, 0, timeAxis);
@@ -258,8 +272,8 @@ export function getDrawOptions(drawTime, options = {}) {

 export const getPunchcardPainter =
  (options = {}) =>
-  (ctx, time, haps, drawTime, paintOptions = {}) =>
-    pianoroll({ ctx, time, haps, ...getDrawOptions(drawTime, { ...paintOptions, ...options }) });
+  (ctx, time, haps, drawTime) =>
+    pianoroll({ ctx, time, haps, ...getDrawOptions(drawTime, options) });

 Pattern.prototype.punchcard = function (options) {
  return this.onPaint(getPunchcardPainter(options));
@@ -0,0 +1,127 @@
+import { Pattern, midiToFreq, getFrequency } from '@strudel/core';
+import { getTheme, getDrawContext } from './draw.mjs';
+
+const c = midiToFreq(36);
+
+const circlePos = (cx, cy, radius, angle) => {
+  angle = angle * Math.PI * 2;
+  const x = Math.sin(angle) * radius + cx;
+  const y = Math.cos(angle) * radius + cy;
+  return [x, y];
+};
+
+const freq2angle = (freq, root) => {
+  return 0.5 - (Math.log2(freq / root) % 1);
+};
+
+export function pitchwheel({
+  haps,
+  ctx,
+  id,
+  hapcircles = 1,
+  circle = 0,
+  edo = 12,
+  root = c,
+  thickness = 3,
+  hapRadius = 6,
+  mode = 'flake',
+  margin = 10,
+} = {}) {
+  const connectdots = mode === 'polygon';
+  const centerlines = mode === 'flake';
+  const w = ctx.canvas.width;
+  const h = ctx.canvas.height;
+  ctx.clearRect(0, 0, w, h);
+  const color = getTheme().foreground;
+
+  const size = Math.min(w, h);
+  const radius = size / 2 - thickness / 2 - hapRadius - margin;
+  const centerX = w / 2;
+  const centerY = h / 2;
+
+  if (id) {
+    haps = haps.filter((hap) => hap.hasTag(id));
+  }
+  ctx.strokeStyle = color;
+  ctx.fillStyle = color;
+  ctx.globalAlpha = 1;
+  ctx.lineWidth = thickness;
+
+  if (circle) {
+    ctx.beginPath();
+    ctx.arc(centerX, centerY, radius, 0, 2 * Math.PI);
+    ctx.stroke();
+  }
+
+  if (edo) {
+    Array.from({ length: edo }, (_, i) => {
+      const angle = freq2angle(root * Math.pow(2, i / edo), root);
+      const [x, y] = circlePos(centerX, centerY, radius, angle);
+      ctx.beginPath();
+      ctx.arc(x, y, hapRadius, 0, 2 * Math.PI);
+      ctx.fill();
+    });
+    ctx.stroke();
+  }
+
+  let shape = [];
+  ctx.lineWidth = hapRadius;
+  haps.forEach((hap) => {
+    let freq;
+    try {
+      freq = getFrequency(hap);
+    } catch (err) {
+      return;
+    }
+    const angle = freq2angle(freq, root);
+    const [x, y] = circlePos(centerX, centerY, radius, angle);
+    const hapColor = hap.value.color || color;
+    ctx.strokeStyle = hapColor;
+    ctx.fillStyle = hapColor;
+    const { velocity = 1, gain = 1 } = hap.value || {};
+    const alpha = velocity * gain;
+    ctx.globalAlpha = alpha;
+    shape.push([x, y, angle, hapColor, alpha]);
+    ctx.beginPath();
+    if (hapcircles) {
+      ctx.moveTo(x + hapRadius, y);
+      ctx.arc(x, y, hapRadius, 0, 2 * Math.PI);
+      ctx.fill();
+    }
+    if (centerlines) {
+      ctx.moveTo(centerX, centerY);
+      ctx.lineTo(x, y);
+    }
+    ctx.stroke();
+  });
+
+  ctx.strokeStyle = color;
+  ctx.globalAlpha = 1;
+  if (connectdots && shape.length) {
+    shape = shape.sort((a, b) => a[2] - b[2]);
+    ctx.beginPath();
+    ctx.moveTo(shape[0][0], shape[0][1]);
+    shape.forEach(([x, y, _, color, alpha]) => {
+      ctx.strokeStyle = color;
+      ctx.globalAlpha = alpha;
+      ctx.lineTo(x, y);
+    });
+    ctx.lineTo(shape[0][0], shape[0][1]);
+    ctx.stroke();
+  }
+
+  return;
+}
+
+Pattern.prototype.pitchwheel = function (options = {}) {
+  let { ctx = getDrawContext(), id = 1 } = options;
+  return this.tag(id).onPaint((_, time, haps) =>
+    pitchwheel({
+      ...options,
+      time,
+      ctx,
+      haps: haps.filter((hap) => hap.isActive(time)),
+      id,
+    }),
+  );
+};
@@ -1,4 +1,5 @@
-import { Pattern } from './index.mjs';
+import { Pattern } from '@strudel/core';
+import { getTheme } from './draw.mjs';

 // polar coords -> xy
 function fromPolar(angle, radius, cx, cy) {
@@ -19,7 +20,7 @@ function spiralSegment(options) {
    cy = 100,
    rotate = 0,
    thickness = margin / 2,
-    color = '#0000ff30',
+    color = getTheme().foreground,
    cap = 'round',
    stretch = 1,
    fromOpacity = 1,
@@ -49,70 +50,81 @@ function spiralSegment(options) {
  ctx.stroke();
 }

-Pattern.prototype.spiral = function (options = {}) {
-  const {
+function drawSpiral(options) {
+  let {
    stretch = 1,
    size = 80,
    thickness = size / 2,
    cap = 'butt', // round butt squar,
    inset = 3, // start angl,
-    playheadColor = '#ffffff90',
+    playheadColor = '#ffffff',
    playheadLength = 0.02,
    playheadThickness = thickness,
    padding = 0,
    steady = 1,
-    inactiveColor = '#ffffff20',
+    activeColor = getTheme().foreground,
+    inactiveColor = getTheme().gutterForeground,
    colorizeInactive = 0,
    fade = true,
    // logSpiral = true,
+    ctx,
+    time,
+    haps,
+    drawTime,
+    id,
  } = options;

-  function spiral({ ctx, time, haps, drawTime }) {
-    const [w, h] = [ctx.canvas.width, ctx.canvas.height];
-    ctx.clearRect(0, 0, w * 2, h * 2);
-    const [cx, cy] = [w / 2, h / 2];
-    const settings = {
-      margin: size / stretch,
-      cx,
-      cy,
-      stretch,
-      cap,
-      thickness,
-    };
-
-    const playhead = {
-      ...settings,
-      thickness: playheadThickness,
-      from: inset - playheadLength,
-      to: inset,
-      color: playheadColor,
-    };
-
-    const [min] = drawTime;
-    const rotate = steady * time;
-    haps.forEach((hap) => {
-      const isActive = hap.whole.begin <= time && hap.endClipped > time;
-      const from = hap.whole.begin - time + inset;
-      const to = hap.endClipped - time + inset - padding;
-      const { color } = hap.context;
-      const opacity = fade ? 1 - Math.abs((hap.whole.begin - time) / min) : 1;
-      spiralSegment({
-        ctx,
-        ...settings,
-        from,
-        to,
-        rotate,
-        color: colorizeInactive || isActive ? color : inactiveColor,
-        fromOpacity: opacity,
-        toOpacity: opacity,
-      });
-    });
-    spiralSegment({
-      ctx,
-      ...playhead,
-      rotate,
-    });
+  if (id) {
+    haps = haps.filter((hap) => hap.hasTag(id));
  }

-  return this.onPaint((ctx, time, haps, drawTime) => spiral({ ctx, time, haps, drawTime }));
+  const [w, h] = [ctx.canvas.width, ctx.canvas.height];
+  ctx.clearRect(0, 0, w * 2, h * 2);
+  const [cx, cy] = [w / 2, h / 2];
+  const settings = {
+    margin: size / stretch,
+    cx,
+    cy,
+    stretch,
+    cap,
+    thickness,
+  };
+
+  const playhead = {
+    ...settings,
+    thickness: playheadThickness,
+    from: inset - playheadLength,
+    to: inset,
+    color: playheadColor,
+  };
+
+  const [min] = drawTime;
+  const rotate = steady * time;
+  haps.forEach((hap) => {
+    const isActive = hap.whole.begin <= time && hap.endClipped > time;
+    const from = hap.whole.begin - time + inset;
+    const to = hap.endClipped - time + inset - padding;
+    const hapColor = hap.value?.color || activeColor;
+    const color = colorizeInactive || isActive ? hapColor : inactiveColor;
+    const opacity = fade ? 1 - Math.abs((hap.whole.begin - time) / min) : 1;
+    spiralSegment({
+      ctx,
+      ...settings,
+      from,
+      to,
+      rotate,
+      color,
+      fromOpacity: opacity,
+      toOpacity: opacity,
+    });
+  });
+  spiralSegment({
+    ctx,
+    ...playhead,
+    rotate,
+  });
+}
+
+Pattern.prototype.spiral = function (options = {}) {
+  return this.onPaint((ctx, time, haps, drawTime) => drawSpiral({ ctx, time, haps, drawTime, ...options }));
 };
@@ -0,0 +1,19 @@
+import { defineConfig } from 'vite';
+import { dependencies } from './package.json';
+import { resolve } from 'path';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'index.mjs'),
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
+    },
+    rollupOptions: {
+      external: [...Object.keys(dependencies)],
+    },
+    target: 'esnext',
+  },
+});
@@ -2,32 +2,63 @@

 This package contains a embeddable web component for the Strudel REPL.

-## Usage
+## Usage via Script Tag

-Either install with `npm i @strudel/embed` or just use a cdn to import the script:
+Use this code in any HTML file:

 ```html
 <script src="https://unpkg.com/@strudel/embed@latest"></script>
 <strudel-repl>
  <!--
-note(`[[e5 [b4 c5] d5 [c5 b4]]
-[a4 [a4 c5] e5 [d5 c5]]
-[b4 [~ c5] d5 e5]
-[c5 a4 a4 ~]
-[[~ d5] [~ f5] a5 [g5 f5]]
-[e5 [~ c5] e5 [d5 c5]]
-[b4 [b4 c5] d5 e5]
-[c5 a4 a4 ~]],
-[[e2 e3]*4]
-[[a2 a3]*4]
-[[g#2 g#3]*2 [e2 e3]*2]
-[a2 a3 a2 a3 a2 a3 b1 c2]
-[[d2 d3]*4]
-[[c2 c3]*4]
-[[b1 b2]*2 [e2 e3]*2]
-[[a1 a2]*4]`).slow(16)
-      -->
+setcps(1)
+n("<0 1 2 3 4>*8").scale('G4 minor')
+.s("gm_lead_6_voice")
+.clip(sine.range(.2,.8).slow(8))
+.jux(rev)
+.room(2)
+.sometimes(add(note("12")))
+.lpf(perlin.range(200,20000).slow(4))
+-->
 </strudel-repl>
 ```

-Note that the Code is placed inside HTML comments to prevent the browser from treating it as HTML.
+This will load the strudel website in an iframe, using the code provided within the HTML comments `<!-- -->`.
+The HTML comments are needed to make sure the browser won't interpret it as HTML.
+
+Alternatively you can create a REPL from JavaScript like this:
+
+```html
+<script src="https://unpkg.com/@strudel/embed@1.0.2"></script>
+<div id="strudel"></div>
+<script>
+  let editor = document.createElement('strudel-repl');
+  editor.setAttribute(
+    'code',
+    `setcps(1)
+n("<0 1 2 3 4>*8").scale('G4 minor')
+.s("gm_lead_6_voice")
+.clip(sine.range(.2,.8).slow(8))
+.jux(rev)
+.room(2)
+.sometimes(add(note("12")))
+.lpf(perlin.range(200,20000).slow(4))`,
+  );
+  document.getElementById('strudel').append(editor);
+</script>
+```
+
+When you're using JSX, you could also use the `code` attribute in your markup:
+
+```html
+<script src="https://unpkg.com/@strudel/embed@1.0.2"></script>
+<strudel-repl code={`
+setcps(1)
+n("<0 1 2 3 4>*8").scale('G4 minor')
+.s("gm_lead_6_voice")
+.clip(sine.range(.2,.8).slow(8))
+.jux(rev)
+.room(2)
+.sometimes(add(note("12")))
+.lpf(perlin.range(200,20000).slow(4))
+`}></strudel-repl>
+```
@@ -4,7 +4,7 @@ class Strudel extends HTMLElement {
  }
  connectedCallback() {
    setTimeout(() => {
-      const code = (this.innerHTML + '').replace('<!--', '').replace('-->', '').trim();
+      const code = this.getAttribute('code') || (this.innerHTML + '').replace('<!--', '').replace('-->', '').trim();
      const iframe = document.createElement('iframe');
      const src = `https://strudel.cc/#${encodeURIComponent(btoa(code))}`;
      // const src = `http://localhost:3000/#${encodeURIComponent(btoa(code))}`;
@@ -1,40 +1,49 @@
-import { getDrawContext } from '@strudel/core';
+import { getDrawContext } from '@strudel/draw';
+import { controls } from '@strudel/core';

 let latestOptions;
-
-function appendCanvas(c) {
-  const { canvas: testCanvas } = getDrawContext();
-  c.canvas.id = 'hydra-canvas';
-  c.canvas.style.position = 'fixed';
-  c.canvas.style.top = '0px';
-  testCanvas.after(c.canvas);
-  return testCanvas;
-}
+let hydra;

 export async function initHydra(options = {}) {
  // reset if options have changed since last init
  if (latestOptions && JSON.stringify(latestOptions) !== JSON.stringify(options)) {
-    document.getElementById('hydra-canvas').remove();
+    document.getElementById('hydra-canvas')?.remove();
  }
  latestOptions = options;
  //load and init hydra
  if (!document.getElementById('hydra-canvas')) {
-    console.log('reinit..');
    const {
      src = 'https://unpkg.com/hydra-synth',
      feedStrudel = false,
+      contextType = 'webgl',
+      pixelRatio = 1,
+      pixelated = true,
      ...hydraConfig
-    } = { detectAudio: false, ...options };
+    } = {
+      detectAudio: false,
+      ...options,
+    };
+    const { canvas } = getDrawContext('hydra-canvas', { contextType, pixelRatio, pixelated });
+    hydraConfig.canvas = canvas;

    await import(/* @vite-ignore */ src);
-    const hydra = new Hydra(hydraConfig);
+    hydra = new Hydra(hydraConfig);
    if (feedStrudel) {
      const { canvas } = getDrawContext();
      canvas.style.display = 'none';
      hydra.synth.s0.init({ src: canvas });
    }
-    appendCanvas(hydra);
  }
 }

+export function clearHydra() {
+  if (hydra) {
+    hydra.hush();
+  }
+  globalThis.s0?.clear();
+  document.getElementById('hydra-canvas')?.remove();
+  globalThis.speed = controls.speed;
+  globalThis.shape = controls.shape;
+}
+
 export const H = (p) => () => p.queryArc(getTime(), getTime())[0].value;
@@ -1,11 +1,11 @@
 {
  "name": "@strudel/hydra",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Hydra integration for strudel",
  "main": "hydra.mjs",
+  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "server": "node server.js",
@@ -34,6 +34,7 @@
  "homepage": "https://github.com/tidalcycles/strudel#readme",
  "dependencies": {
    "@strudel/core": "workspace:*",
+    "@strudel/draw": "workspace:*",
    "hydra-synth": "^1.3.29"
  },
  "devDependencies": {
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'hydra.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -5,7 +5,7 @@ This program is free software: you can redistribute it and/or modify it under th
 */

 import * as _WebMidi from 'webmidi';
-import { Pattern, isPattern, logger, ref } from '@strudel/core';
+import { Pattern, getEventOffsetMs, isPattern, logger, ref } from '@strudel/core';
 import { noteToMidi } from '@strudel/core';
 import { Note } from 'webmidi';
 // if you use WebMidi from outside of this package, make sure to import that instance:
@@ -112,24 +112,24 @@ Pattern.prototype.midi = function (output) {
      logger(`Midi device disconnected! Available: ${getMidiDeviceNamesString(outputs)}`),
  });

-  return this.onTrigger((time, hap, currentTime, cps) => {
+  return this.onTrigger((time_deprecate, hap, currentTime, cps, targetTime) => {
    if (!WebMidi.enabled) {
      console.log('not enabled');
      return;
    }
    const device = getDevice(output, WebMidi.outputs);
    hap.ensureObjectValue();
-
-    const offset = (time - currentTime) * 1000;
+    //magic number to get audio engine to line up, can probably be calculated somehow
+    const latencyMs = 34;
    // passing a string with a +num into the webmidi api adds an offset to the current time https://webmidijs.org/api/classes/Output
-    const timeOffsetString = `+${offset}`;
-
+    const timeOffsetString = `+${getEventOffsetMs(targetTime, currentTime) + latencyMs}`;
    // destructure value
-    const { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd } = hap.value;
-    const velocity = hap.context?.velocity ?? 0.9; // TODO: refactor velocity
+    let { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd, gain = 1, velocity = 0.9 } = hap.value;
+
+    velocity = gain * velocity;

    // note off messages will often a few ms arrive late, try to prevent glitching by subtracting from the duration length
-    const duration = Math.floor(hap.duration.valueOf() * 1000 - 10);
+    const duration = (hap.duration.valueOf() / cps) * 1000 - 10;
    if (note != null) {
      const midiNumber = typeof note === 'number' ? note : noteToMidi(note);
      const midiNote = new Note(midiNumber, { attack: velocity, duration });
@@ -167,9 +167,15 @@ let listeners = {};
 const refs = {};

 export async function midin(input) {
+  if (isPattern(input)) {
+    throw new Error(
+      `.midi does not accept Pattern input. Make sure to pass device name with single quotes. Example: .midi('${
+        WebMidi.outputs?.[0]?.name || 'IAC Driver Bus 1'
+      }')`,
+    );
+  }
  const initial = await enableWebMidi(); // only returns on first init
  const device = getDevice(input, WebMidi.inputs);
-
  if (initial) {
    const otherInputs = WebMidi.inputs.filter((o) => o.name !== device.name);
    logger(
@@ -1,11 +1,11 @@
 {
  "name": "@strudel/midi",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Midi API for strudel",
  "main": "index.mjs",
+  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "build": "vite build",
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -295,7 +295,15 @@ function peg$parse(input, options) {
  var peg$f6 = function(a) { return a };
  var peg$f7 = function(s) { s.arguments_.alignment = 'polymeter_slowcat'; return s; };
  var peg$f8 = function(a) { return x => x.options_['weight'] = (x.options_['weight'] ?? 1) + (a ?? 2) - 1 };
-  var peg$f9 = function(a) { return x => x.options_['reps'] = (x.options_['reps'] ?? 1) + (a ?? 2) - 1 };
+  var peg$f9 = function(a) { return x => {const reps = (x.options_['reps'] ?? 1) + (a ?? 2) - 1;
+                 x.options_['reps'] = reps;
+                 console.log("reps: ", reps)
+                 x.options_['ops'] = x.options_['ops'].filter(x => x.type_ !== "replicate");
+                 x.options_['ops'].push({ type_: "replicate", arguments_ :{ amount:reps }});
+                 x.options_['weight'] = reps;
+                 console.log("options: ", x.options_);
+                }
+  };
  var peg$f10 = function(p, s, r) { return x => x.options_['ops'].push({ type_: "bjorklund", arguments_ :{ pulse: p, step:s, rotation:r }}) };
  var peg$f11 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'slow' }}) };
  var peg$f12 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'fast' }}) };
@@ -308,11 +316,11 @@ function peg$parse(input, options) {
    }
    return result;
  };
-  var peg$f17 = function(s) { return new PatternStub(s, 'fastcat'); };
+  var peg$f17 = function(tactus, s) { return new PatternStub(s, 'fastcat', undefined, !!tactus); };
  var peg$f18 = function(tail) { return { alignment: 'stack', list: tail }; };
  var peg$f19 = function(tail) { return { alignment: 'rand', list: tail, seed: seed++ }; };
  var peg$f20 = function(tail) { return { alignment: 'feet', list: tail, seed: seed++ }; };
-  var peg$f21 = function(head, tail) { if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } };
+  var peg$f21 = function(head, tail) {if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } };
  var peg$f22 = function(head, tail) { return new PatternStub(tail ? [head, ...tail.list] : [head], 'polymeter'); };
  var peg$f23 = function(sc) { return sc; };
  var peg$f24 = function(s) { return { name: "struct", args: { mini:s }}};
@@ -1477,24 +1485,36 @@ function peg$parse(input, options) {
  }

  function peg$parsesequence() {
-    var s0, s1, s2;
+    var s0, s1, s2, s3;

    s0 = peg$currPos;
-    s1 = [];
-    s2 = peg$parseslice_with_ops();
-    if (s2 !== peg$FAILED) {
-      while (s2 !== peg$FAILED) {
-        s1.push(s2);
-        s2 = peg$parseslice_with_ops();
-      }
+    if (input.charCodeAt(peg$currPos) === 94) {
+      s1 = peg$c9;
+      peg$currPos++;
    } else {
      s1 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$e17); }
    }
-    if (s1 !== peg$FAILED) {
+    if (s1 === peg$FAILED) {
+      s1 = null;
+    }
+    s2 = [];
+    s3 = peg$parseslice_with_ops();
+    if (s3 !== peg$FAILED) {
+      while (s3 !== peg$FAILED) {
+        s2.push(s3);
+        s3 = peg$parseslice_with_ops();
+      }
+    } else {
+      s2 = peg$FAILED;
+    }
+    if (s2 !== peg$FAILED) {
      peg$savedPos = s0;
-      s1 = peg$f17(s1);
+      s0 = peg$f17(s1, s2);
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
    }
-    s0 = s1;

    return s0;
  }
@@ -2476,10 +2496,10 @@ function peg$parse(input, options) {
    this.location_ = location();
  }

-  var PatternStub = function(source, alignment, seed)
+  var PatternStub = function(source, alignment, seed, tactus)
  {
    this.type_ = "pattern";
-    this.arguments_ = { alignment: alignment };
+    this.arguments_ = { alignment: alignment, tactus: tactus };
    if (seed !== undefined) {
      this.arguments_.seed = seed;
    }
@@ -19,10 +19,10 @@ This program is free software: you can redistribute it and/or modify it under th
    this.location_ = location();
  }

-  var PatternStub = function(source, alignment, seed)
+  var PatternStub = function(source, alignment, seed, tactus)
  {
    this.type_ = "pattern";
-    this.arguments_ = { alignment: alignment };
+    this.arguments_ = { alignment: alignment, tactus: tactus };
    if (seed !== undefined) {
      this.arguments_.seed = seed;
    }
@@ -135,7 +135,14 @@ op_weight = ws ("@" / "_") a:number?
  { return x => x.options_['weight'] = (x.options_['weight'] ?? 1) + (a ?? 2) - 1 }
  
 op_replicate = ws "!" a:number?
-  { return x => x.options_['reps'] = (x.options_['reps'] ?? 1) + (a ?? 2) - 1 }
+  { return x => {// A bit fiddly, to support both x!4 and x!!! as equivalent..
+                 const reps = (x.options_['reps'] ?? 1) + (a ?? 2) - 1;
+                 x.options_['reps'] = reps;
+                 x.options_['ops'] = x.options_['ops'].filter(x => x.type_ !== "replicate");
+                 x.options_['ops'].push({ type_: "replicate", arguments_ :{ amount:reps }});
+                 x.options_['weight'] = reps;
+                }
+  }

 op_bjorklund = "(" ws p:slice_with_ops ws comma ws s:slice_with_ops ws comma? ws r:slice_with_ops? ws ")"
  { return x => x.options_['ops'].push({ type_: "bjorklund", arguments_ :{ pulse: p, step:s, rotation:r }}) }
@@ -165,8 +172,8 @@ slice_with_ops = s:slice ops:slice_op*
  }

 // a sequence is a combination of one or more successive slices (as an array)
-sequence = s:(slice_with_ops)+
-  { return new PatternStub(s, 'fastcat'); }
+sequence = tactus:'^'? s:(slice_with_ops)+
+  { return new PatternStub(s, 'fastcat', undefined, !!tactus); }

 // a stack is a series of vertically aligned sequence, separated by a comma
 stack_tail = tail:(comma @sequence)+
@@ -184,7 +191,7 @@ dot_tail = tail:(dot @sequence)+
 // if the stack contains only one element, we don't create a stack but return the
 // underlying element
 stack_or_choose = head:sequence tail:(stack_tail / choose_tail / dot_tail)?
-  { if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } }
+  {if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } }

 polymeter_stack = head:sequence tail:stack_tail?
  { return new PatternStub(tail ? [head, ...tail.list] : [head], 'polymeter'); }
@@ -6,6 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th

 import * as krill from './krill-parser.js';
 import * as strudel from '@strudel/core';
+import Fraction, { lcm } from '@strudel/core/fraction.mjs';

 const randOffset = 0.0003;

@@ -26,6 +27,12 @@ const applyOptions = (parent, enter) => (pat, i) => {
          pat = strudel.reify(pat)[type](enter(amount));
          break;
        }
+        case 'replicate': {
+          const { amount } = op.arguments_;
+          pat = strudel.reify(pat);
+          pat = pat._repeatCycles(amount)._fast(amount);
+          break;
+        }
        case 'bjorklund': {
          if (op.arguments_.rotation) {
            pat = pat.euclidRot(enter(op.arguments_.pulse), enter(op.arguments_.step), enter(op.arguments_.rotation));
@@ -66,66 +73,88 @@ const applyOptions = (parent, enter) => (pat, i) => {
  return pat;
 };

-function resolveReplications(ast) {
-  ast.source_ = strudel.flatten(
-    ast.source_.map((child) => {
-      const { reps } = child.options_ || {};
-      if (!reps) {
-        return [child];
-      }
-      delete child.options_.reps;
-      return Array(reps).fill(child);
-    }),
-  );
-}
-
 // expects ast from mini2ast + quoted mini string + optional callback when a node is entered
 export function patternifyAST(ast, code, onEnter, offset = 0) {
  onEnter?.(ast);
  const enter = (node) => patternifyAST(node, code, onEnter, offset);
  switch (ast.type_) {
    case 'pattern': {
-      resolveReplications(ast);
+      // resolveReplications(ast);
      const children = ast.source_.map((child) => enter(child)).map(applyOptions(ast, enter));
      const alignment = ast.arguments_.alignment;
-      if (alignment === 'stack') {
-        return strudel.stack(...children);
-      }
-      if (alignment === 'polymeter_slowcat') {
-        const aligned = children.map((child) => child._slow(strudel.Fraction(child.__weight ?? 1)));
-        return strudel.stack(...aligned);
-      }
-      if (alignment === 'polymeter') {
-        // polymeter
-        const stepsPerCycle = ast.arguments_.stepsPerCycle
-          ? enter(ast.arguments_.stepsPerCycle).fmap((x) => strudel.Fraction(x))
-          : strudel.pure(strudel.Fraction(children.length > 0 ? children[0].__weight : 1));
+      const with_tactus = children.filter((child) => child.__tactus_source);
+      let pat;
+      switch (alignment) {
+        case 'stack': {
+          pat = strudel.stack(...children);
+          if (with_tactus.length) {
+            pat.tactus = lcm(...with_tactus.map((x) => Fraction(x.tactus)));
+          }
+          break;
+        }
+        case 'polymeter_slowcat': {
+          pat = strudel.stack(...children.map((child) => child._slow(child.__weight)));
+          if (with_tactus.length) {
+            pat.tactus = lcm(...with_tactus.map((x) => Fraction(x.tactus)));
+          }
+          break;
+        }
+        case 'polymeter': {
+          // polymeter
+          const stepsPerCycle = ast.arguments_.stepsPerCycle
+            ? enter(ast.arguments_.stepsPerCycle).fmap((x) => strudel.Fraction(x))
+            : strudel.pure(strudel.Fraction(children.length > 0 ? children[0].__weight : 1));

-        const aligned = children.map((child) => child.fast(stepsPerCycle.fmap((x) => x.div(child.__weight || 1))));
-        return strudel.stack(...aligned);
+          const aligned = children.map((child) => child.fast(stepsPerCycle.fmap((x) => x.div(child.__weight))));
+          pat = strudel.stack(...aligned);
+          break;
+        }
+        case 'rand': {
+          pat = strudel.chooseInWith(strudel.rand.early(randOffset * ast.arguments_.seed).segment(1), children);
+          if (with_tactus.length) {
+            pat.tactus = lcm(...with_tactus.map((x) => Fraction(x.tactus)));
+          }
+          break;
+        }
+        case 'feet': {
+          pat = strudel.fastcat(...children);
+          break;
+        }
+        default: {
+          const weightedChildren = ast.source_.some((child) => !!child.options_?.weight);
+          if (weightedChildren) {
+            const weightSum = ast.source_.reduce(
+              (sum, child) => sum.add(child.options_?.weight || strudel.Fraction(1)),
+              strudel.Fraction(0),
+            );
+            pat = strudel.timeCat(
+              ...ast.source_.map((child, i) => [child.options_?.weight || strudel.Fraction(1), children[i]]),
+            );
+            pat.__weight = weightSum; // for polymeter
+            pat.tactus = weightSum;
+            if (with_tactus.length) {
+              pat.tactus = pat.tactus.mul(lcm(...with_tactus.map((x) => Fraction(x.tactus))));
+            }
+          } else {
+            pat = strudel.sequence(...children);
+            pat.tactus = children.length;
+          }
+          if (ast.arguments_.tactus) {
+            pat.__tactus_source = true;
+          }
+        }
      }
-      if (alignment === 'rand') {
-        return strudel.chooseInWith(strudel.rand.early(randOffset * ast.arguments_.seed).segment(1), children);
+      if (with_tactus.length) {
+        pat.__tactus_source = true;
      }
-      if (alignment === 'feet') {
-        return strudel.fastcat(...children);
-      }
-      const weightedChildren = ast.source_.some((child) => !!child.options_?.weight);
-      if (weightedChildren) {
-        const weightSum = ast.source_.reduce((sum, child) => sum + (child.options_?.weight || 1), 0);
-        const pat = strudel.timeCat(...ast.source_.map((child, i) => [child.options_?.weight || 1, children[i]]));
-        pat.__weight = weightSum;
-        return pat;
-      }
-      const pat = strudel.sequence(...children);
-      pat.__weight = children.length;
      return pat;
    }
    case 'element': {
+      1;
      return enter(ast.source_);
    }
    case 'atom': {
-      if (ast.source_ === '~') {
+      if (ast.source_ === '~' || ast.source_ === '-') {
        return strudel.silence;
      }
      if (!ast.location_) {
@@ -161,7 +190,7 @@ export const getLeafLocation = (code, leaf, globalOffset = 0) => {
 };

 // takes quoted mini string, returns ast
-export const mini2ast = (code, start, userCode) => {
+export const mini2ast = (code, start = 0, userCode = code) => {
  try {
    return krill.parse(code);
  } catch (error) {
@@ -1,12 +1,11 @@
 {
  "name": "@strudel/mini",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Mini notation for strudel",
  "main": "index.mjs",
  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "test": "vitest run",
@@ -6,6 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th

 import { getLeafLocation, getLeafLocations, mini, mini2ast } from '../mini.mjs';
 import '@strudel/core/euclid.mjs';
+import { Fraction } from '@strudel/core/index.mjs';
 import { describe, expect, it } from 'vitest';

 describe('mini', () => {
@@ -117,6 +118,9 @@ describe('mini', () => {
    checkEuclid([11, 24], 'x ~ ~ x ~ x ~ x ~ x ~ x ~ ~ x ~ x ~ x ~ x ~ x ~');
    checkEuclid([13, 24], 'x ~ x x ~ x ~ x ~ x ~ x ~ x x ~ x ~ x ~ x ~ x ~');
  });
+  it('supports the - alias for ~', () => {
+    expect(minS('a - b [- c]')).toEqual(minS('a ~ b [~ c]'));
+  });
  it('supports the ? operator', () => {
    expect(
      mini('a?')
@@ -204,6 +208,15 @@ describe('mini', () => {
  it('_ and @ are almost interchangeable', () => {
    expect(minS('a @ b @ @')).toEqual(minS('a _2 b _3'));
  });
+  it('supports ^ tactus marking', () => {
+    expect(mini('a [^b c]').tactus).toEqual(Fraction(4));
+    expect(mini('[a b c] [d [e f]]').tactus).toEqual(Fraction(2));
+    expect(mini('^[a b c] [d [e f]]').tactus).toEqual(Fraction(2));
+    expect(mini('[a b c] [d [^e f]]').tactus).toEqual(Fraction(8));
+    expect(mini('[a b c] [^d [e f]]').tactus).toEqual(Fraction(4));
+    expect(mini('[^a b c] [^d [e f]]').tactus).toEqual(Fraction(12));
+    expect(mini('[^a b c] [d [^e f]]').tactus).toEqual(Fraction(24));
+  });
 });

 describe('getLeafLocation', () => {
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'index.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -0,0 +1,19 @@
+# @strudel/node
+
+This is an experiment to run strudel in node.
+
+## Usage
+
+```sh
+# Setup
+# - make sure node >= 20 is installed
+# - make sure pnpm is installed
+cd packages/node
+pnpm i
+# Usage
+pnpm start
+```
+
+Then run `sclang` with superdirt in another terminal.
+
+You can now edit and save the file `pattern.mjs` to update your pattern!
@@ -0,0 +1,64 @@
+import { createClock, evalScope } from '@strudel/core';
+import { evaluate } from '@strudel/transpiler';
+import watch from 'node-watch';
+import fs from 'node:fs/promises';
+import { AudioContext, OscillatorNode, GainNode } from 'node-web-audio-api';
+
+const audioContext = new AudioContext();
+
+let file = 'pattern.mjs';
+let pattern;
+async function evaluateFile() {
+  try {
+    console.log('// file evaluated:');
+    const code = await fs.readFile(file, { encoding: 'utf8' });
+    console.log(code);
+    const res = await evaluate(code);
+    pattern = res.pattern;
+  } catch (err) {
+    console.error(err);
+  }
+}
+
+// const getTime = () => performance.now() / 1000;
+const getTime = () => audioContext.currentTime;
+let minLatency = 50;
+async function main() {
+  await evalScope(import('@strudel/core'), import('@strudel/mini'), import('@strudel/tonal'));
+  await evaluateFile();
+  watch(file, { recursive: true }, () => evaluateFile());
+  let lastEnd;
+  const clock = createClock(getTime, (phase) => {
+    if (!lastEnd) {
+      lastEnd = phase;
+      return;
+    }
+    const haps = pattern.queryArc(lastEnd, phase);
+    lastEnd = phase;
+    const cps = 1;
+    const cycle = Math.floor(phase);
+    haps
+      .filter((h) => h.hasOnset())
+      .forEach((hap) => {
+        const env = new GainNode(audioContext, { gain: 0 });
+        const { attack = 0.01, gain = 1 } = hap.value;
+        env.connect(audioContext.destination);
+        const now = hap.whole.begin;
+        const duration = hap.duration;
+        env.gain
+          .setValueAtTime(0, now)
+          .linearRampToValueAtTime(gain * 0.2, now + attack)
+          .exponentialRampToValueAtTime(0.0001, now + duration);
+        const frequency = hap.value.freq;
+
+        const osc = new OscillatorNode(audioContext, { frequency });
+        osc.connect(env);
+        osc.start(now);
+        osc.stop(now + duration);
+      });
+  });
+
+  clock.start();
+}
+
+main();
@@ -0,0 +1,76 @@
+import { createClock, evalScope } from '@strudel/core';
+import { evaluate } from '@strudel/transpiler';
+import OSC from 'osc-js';
+import watch from 'node-watch';
+import fs from 'node:fs/promises';
+
+const config = {
+  receiver: 'udp', // @param {string} Where messages sent via 'send' method will be delivered to, 'ws' for Websocket clients, 'udp' for udp client
+  open: {
+    host: 'localhost', // @param {string} Hostname of udp server to bind to
+    port: 57121, // @param {number} Port of udp client for messaging
+    // enabling the following line will receive tidal messages:
+    // port: 57120, // @param {number} Port of udp client for messaging
+    exclusive: false, // @param {boolean} Exclusive flag
+  },
+  send: {
+    host: 'localhost', // @param {string} Hostname of udp client for messaging
+    port: 57120, // @param {number} Port of udp client for messaging
+  },
+};
+
+const osc = new OSC({ plugin: new OSC.DatagramPlugin(config) });
+
+osc.open(); // start a WebSocket server on port 8080
+
+console.log('osc client running on port', config.open.port);
+console.log('osc server running on port', config.send.port);
+
+let file = 'pattern.mjs';
+let pattern;
+async function evaluateFile() {
+  try {
+    console.log('// file evaluated:');
+    const code = await fs.readFile(file, { encoding: 'utf8' });
+    console.log(code);
+    const res = await evaluate(code);
+    pattern = res.pattern;
+  } catch (err) {
+    console.error(err);
+  }
+}
+
+const getTime = () => performance.now() / 1000;
+async function main() {
+  await evalScope(import('@strudel/core'), import('@strudel/mini'), import('@strudel/tonal'));
+  await evaluateFile();
+  watch(file, { recursive: true }, () => evaluateFile());
+  let lastEnd;
+  let minLatency = 50;
+  const clock = createClock(getTime, (phase) => {
+    if (!lastEnd) {
+      lastEnd = phase;
+      return;
+    }
+    const haps = pattern.queryArc(lastEnd, phase);
+    lastEnd = phase;
+    const cps = 1;
+    const cycle = Math.floor(phase);
+    haps
+      .filter((h) => h.hasOnset())
+      .forEach((hap) => {
+        const delta = hap.duration.valueOf();
+        const controls = Object.assign({}, { cps, cycle, delta }, hap.value);
+        const keyvals = Object.entries(controls).flat();
+        const ts = Math.floor(performance.timeOrigin + hap.whole.begin * 1000 + minLatency);
+        const message = new OSC.Message('/dirt/play', ...keyvals);
+        const bundle = new OSC.Bundle([message], ts);
+        bundle.timestamp(ts); // workaround for https://github.com/adzialocha/osc-js/issues/60
+        osc.send(bundle);
+      });
+  });
+
+  clock.start();
+}
+
+main();
@@ -0,0 +1,37 @@
+{
+  "name": "@strudel/node",
+  "version": "1.1.0",
+  "description": "Strudel running in node",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tidalcycles/strudel.git"
+  },
+  "main": "index.mjs",
+  "scripts": {
+    "osc": "node osc-superdirt.mjs",
+    "waa": "node node-web-audio-api.mjs"
+  },
+  "keywords": [
+    "tidalcycles",
+    "strudel",
+    "pattern",
+    "livecoding",
+    "algorave"
+  ],
+  "author": "Felix Roos <flix91@gmail.com>",
+  "license": "AGPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/tidalcycles/strudel/issues"
+  },
+  "homepage": "https://github.com/tidalcycles/strudel#readme",
+  "dependencies": {
+    "@strudel/core": "workspace:*",
+    "@strudel/mini": "workspace:*",
+    "@strudel/osc": "workspace:*",
+    "@strudel/tonal": "workspace:*",
+    "@strudel/transpiler": "workspace:*",
+    "node-watch": "^0.7.4",
+    "node-web-audio-api": "^0.20.0",
+    "osc-js": "^2.4.0"
+  }
+}
@@ -0,0 +1,2 @@
+freq("110 220 [330 440,550,660]")
+.attack(.1).gain(.4)
@@ -6,7 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th

 import OSC from 'osc-js';

-import { logger, parseNumeral, Pattern } from '@strudel/core';
+import { logger, parseNumeral, Pattern, getEventOffsetMs } from '@strudel/core';

 let connection; // Promise<OSC>
 function connect() {
@@ -44,7 +44,7 @@ function connect() {
 * @returns Pattern
 */
 Pattern.prototype.osc = function () {
-  return this.onTrigger(async (time, hap, currentTime, cps = 1) => {
+  return this.onTrigger(async (time, hap, currentTime, cps = 1, targetTime) => {
    hap.ensureObjectValue();
    const osc = await connect();
    const cycle = hap.wholeOrPart().begin.valueOf();
@@ -56,7 +56,8 @@ Pattern.prototype.osc = function () {
    const keyvals = Object.entries(controls).flat();
    // time should be audio time of onset
    // currentTime should be current time of audio context (slightly before time)
-    const offset = (time - currentTime) * 1000;
+    const offset = getEventOffsetMs(targetTime, currentTime);
+
    // timestamp in milliseconds used to trigger the osc bundle at a precise moment
    const ts = Math.floor(Date.now() + offset);
    const message = new OSC.Message('/dirt/play', ...keyvals);
@@ -1,11 +1,11 @@
 {
  "name": "@strudel/osc",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "OSC messaging for strudel",
  "main": "osc.mjs",
+  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "server": "node server.js",
@@ -4,7 +4,7 @@ Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/st
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-const OSC = require('osc-js');
+import OSC from 'osc-js';

 const config = {
  receiver: 'ws', // @param {string} Where messages sent via 'send' method will be delivered to, 'ws' for Websocket clients, 'udp' for udp client
@@ -8,8 +8,8 @@ export default defineConfig({
  build: {
    lib: {
      entry: resolve(__dirname, 'osc.mjs'),
-      formats: ['es', 'cjs'],
-      fileName: (ext) => ({ es: 'index.mjs', cjs: 'index.js' })[ext],
+      formats: ['es'],
+      fileName: (ext) => ({ es: 'index.mjs' })[ext],
    },
    rollupOptions: {
      external: [...Object.keys(dependencies)],
@@ -1,3 +1,96 @@
 # @strudel/repl

 The Strudel REPL as a web component.
+
+## Add Script Tag
+
+First place this script tag once in your HTML:
+
+```html
+<script src="https://unpkg.com/@strudel/repl@latest"></script>
+```
+
+You can also pin the version like this:
+
+```html
+<script src="https://unpkg.com/@strudel/repl@1.0.2"></script>
+```
+
+This has the advantage that your code will always work, regardless of potential breaking changes in the strudel codebase.
+See [releases](https://github.com/tidalcycles/strudel/releases) for the latest versions.
+
+## Use Web Component
+
+When you've added the script tag, you can use the `strudel-editor` web component:
+
+```html
+<strudel-editor>
+  <!--
+setcps(1)
+n("<0 1 2 3 4>*8").scale('G4 minor')
+.s("gm_lead_6_voice")
+.clip(sine.range(.2,.8).slow(8))
+.jux(rev)
+.room(2)
+.sometimes(add(note("12")))
+.lpf(perlin.range(200,20000).slow(4))
+-->
+</strudel-editor>
+```
+
+This will load the Strudel REPL using the code provided within the HTML comments `<!-- -->`.
+The HTML comments are needed to make sure the browser won't interpret it as HTML.
+
+Alternatively you can create a REPL from JavaScript like this:
+
+```html
+<script src="https://unpkg.com/@strudel/repl@latest"></script>
+<div id="strudel"></div>
+<script>
+  const repl = document.createElement('strudel-editor');
+  repl.setAttribute(
+    'code',
+    `setcps(1)
+n("<0 1 2 3 4>*8").scale('G4 minor')
+.s("gm_lead_6_voice")
+.clip(sine.range(.2,.8).slow(8))
+.jux(rev)
+.room(2)
+.sometimes(add(note("12")))
+.lpf(perlin.range(200,20000).slow(4))`,
+  );
+  document.getElementById('strudel').append(repl);
+</script>
+```
+
+## Interacting with the REPL
+
+If you get a hold of the `strudel-editor` element, you can interact with the strudel REPL from Javascript:
+
+```html
+<script src="https://unpkg.com/@strudel/repl@latest"></script>
+<strudel-editor id="repl">
+  <!-- ... -->
+</strudel-editor>
+<script>
+const repl = document.getElementById('repl');
+console.log(repl.editor);
+</script>
+```
+
+or
+
+```html
+<script src="https://unpkg.com/@strudel/repl@latest"></script>
+<div id="strudel"></div>
+<script>
+  const repl = document.createElement('strudel-editor');
+  repl.setAttribute('code', `...`);
+  document.getElementById('strudel').append(repl);
+  console.log(repl.editor);
+</script>
+```
+
+The `.editor` property on the `strudel-editor` web component gives you the instance of [StrudelMirror](https://github.com/tidalcycles/strudel/blob/a46bd9b36ea7d31c9f1d3fca484297c7da86893f/packages/codemirror/codemirror.mjs#L124) that runs the REPL.
+
+For example, you could use `setCode` to change the code from the outside, `start` / `stop` to toggle playback or `evaluate` to evaluate the code.
@@ -1,8 +1,8 @@
 {
  "name": "@strudel/repl",
-  "version": "1.0.0",
+  "version": "1.0.2",
  "description": "Strudel REPL as a Web Component",
-  "main": "index.mjs",
+  "module": "index.mjs",
  "publishConfig": {
    "main": "dist/index.js",
    "module": "dist/index.mjs"
@@ -35,6 +35,7 @@
  "dependencies": {
    "@strudel/codemirror": "workspace:*",
    "@strudel/core": "workspace:*",
+    "@strudel/draw": "workspace:*",
    "@strudel/hydra": "workspace:*",
    "@strudel/midi": "workspace:*",
    "@strudel/mini": "workspace:*",
@@ -1,4 +1,4 @@
-import { controls, noteToMidi, valueToMidi, Pattern, evalScope } from '@strudel/core';
+import { noteToMidi, valueToMidi, Pattern, evalScope } from '@strudel/core';
 import { registerSynthSounds, registerZZFXSounds, samples } from '@strudel/webaudio';
 import * as core from '@strudel/core';

@@ -6,6 +6,7 @@ export async function prebake() {
  const modulesLoading = evalScope(
    // import('@strudel/core'),
    core,
+    import('@strudel/draw'),
    import('@strudel/mini'),
    import('@strudel/tonal'),
    import('@strudel/webaudio'),
@@ -17,7 +18,6 @@ export async function prebake() {
    // import('@strudel/serial'),
    // import('@strudel/csound'),
    // import('@strudel/osc'),
-    controls, // sadly, this cannot be exported from core directly (yet)
  );
  // load samples
  const ds = 'https://raw.githubusercontent.com/felixroos/dough-samples/main/';
@@ -1,4 +1,5 @@
-import { getDrawContext, silence } from '@strudel/core';
+import { silence } from '@strudel/core';
+import { getDrawContext } from '@strudel/draw';
 import { transpiler } from '@strudel/transpiler';
 import { getAudioContext, webaudioOutput } from '@strudel/webaudio';
 import { StrudelMirror, codemirrorSettings } from '@strudel/codemirror';
@@ -40,17 +41,8 @@ if (typeof HTMLElement !== 'undefined') {
        initialCode: '// LOADING',
        pattern: silence,
        drawTime,
-        onDraw: (haps, time, frame, painters) => {
-          painters.length && drawContext.clearRect(0, 0, drawContext.canvas.width * 2, drawContext.canvas.height * 2);
-          painters?.forEach((painter) => {
-            // ctx time haps drawTime paintOptions
-            painter(drawContext, time, haps, drawTime, { clear: false });
-          });
-        },
+        drawContext,
        prebake,
-        afterEval: ({ code }) => {
-          // window.location.hash = '#' + code2hash(code);
-        },
        onUpdateState: (state) => {
          const event = new CustomEvent('update', {
            detail: state,
@@ -0,0 +1,22 @@
+# @strudel/sampler
+
+This package allows you to serve your samples on disk to the strudel REPL. 
+
+```sh
+cd ~/your/samples/ 
+npx @strudel/sampler
+```
+
+This will run a server on `http://localhost:5432`. 
+You can now load the samples via:
+
+```js
+samples('http://localhost:5432')
+```
+
+## Options
+
+```sh
+LOG=1 npx @strudel/sampler # adds logging
+PORT=5555 npx @strudel/sampler # changes port
+```
@@ -0,0 +1,19 @@
+{
+  "name": "@strudel/sampler",
+  "version": "0.0.9",
+  "description": "",
+  "keywords": [
+    "tidalcycles",
+    "strudel",
+    "pattern",
+    "livecoding",
+    "algorave"
+  ],
+  "author": "Felix Roos <flix91@gmail.com>",
+  "license": "AGPL-3.0-or-later",
+  "bin": "./sample-server.mjs",
+  "type": "module",
+  "dependencies": {
+    "cowsay": "^1.6.0"
+  }
+}
@@ -0,0 +1,117 @@
+#!/usr/bin/env node
+
+import cowsay from 'cowsay';
+import { createReadStream } from 'fs';
+import { readdir } from 'fs/promises';
+import http from 'http';
+import { join } from 'path';
+import os from 'os';
+
+// eslint-disable-next-line
+const LOG = !!process.env.LOG || false;
+
+console.log(
+  cowsay.say({
+    text: 'welcome to @strudel/sampler',
+    e: 'oO',
+    T: 'U ',
+  }),
+);
+
+async function getFilesInDirectory(directory) {
+  let files = [];
+  const dirents = await readdir(directory, { withFileTypes: true });
+  for (const dirent of dirents) {
+    const fullPath = join(directory, dirent.name);
+    if (dirent.isDirectory()) {
+      if (dirent.name.startsWith('.')) {
+        LOG && console.warn(`ignore hidden folder: ${fullPath}`);
+        continue;
+      }
+      try {
+        const subFiles = (await getFilesInDirectory(fullPath)).filter((f) =>
+          ['wav', 'mp3', 'ogg'].includes(f.split('.').slice(-1)[0].toLowerCase()),
+        );
+        files = files.concat(subFiles);
+        LOG && console.log(`${dirent.name} (${subFiles.length})`);
+      } catch (err) {
+        LOG && console.warn(`skipped due to error: ${fullPath}`);
+      }
+    } else {
+      files.push(fullPath);
+    }
+  }
+  return files;
+}
+
+async function getBanks(directory) {
+  // const directory = resolve(__dirname, '.');
+  let files = await getFilesInDirectory(directory);
+  let banks = {};
+  files = files.map((url) => {
+    const [bank] = url.split('/').slice(-2);
+    banks[bank] = banks[bank] || [];
+    url = url.replace(directory, '');
+    banks[bank].push(url);
+    return url;
+  });
+  banks._base = `http://localhost:5432`;
+  return { banks, files };
+}
+
+// eslint-disable-next-line
+const directory = process.cwd();
+const server = http.createServer(async (req, res) => {
+  res.setHeader('Access-Control-Allow-Origin', '*');
+  const { banks, files } = await getBanks(directory);
+  if (req.url === '/') {
+    res.setHeader('Content-Type', 'application/json');
+    return res.end(JSON.stringify(banks));
+  }
+  let subpath = decodeURIComponent(req.url);
+  if (!files.includes(subpath)) {
+    res.statusCode = 404;
+    res.end('File not found');
+    return;
+  }
+  const filePath = join(directory, subpath);
+  const readStream = createReadStream(filePath);
+  readStream.on('error', (err) => {
+    res.statusCode = 500;
+    res.end('Internal server error');
+    console.error(err);
+  });
+  readStream.pipe(res);
+});
+
+// eslint-disable-next-line
+const PORT = process.env.PORT || 5432;
+const IP_ADDRESS = '0.0.0.0';
+let IP;
+const networkInterfaces = os.networkInterfaces();
+
+Object.keys(networkInterfaces).forEach((key) => {
+  networkInterfaces[key].forEach((networkInterface) => {
+    if (networkInterface.family === 'IPv4' && !networkInterface.internal) {
+      IP = networkInterface.address;
+    }
+  });
+});
+
+if (!IP) {
+  console.error("Unable to determine server's IP address.");
+  // eslint-disable-next-line
+  process.exit(1);
+}
+
+server.listen(PORT, IP_ADDRESS, () => {
+  console.log(`@strudel/sampler is now serving audio files from:
+ ${directory}
+
+To use them in the Strudel REPL, run:
+ samples('http://localhost:${PORT}')
+
+Or on a machine in the same network:
+ samples('http://${IP}:${PORT}')
+`);
+});
@@ -1,11 +1,11 @@
 {
  "name": "@strudel/serial",
-  "version": "1.0.0",
+  "version": "1.0.1",
  "description": "Webserial API for strudel",
  "main": "serial.mjs",
+  "type": "module",
  "publishConfig": {
-    "main": "dist/index.js",
-    "module": "dist/index.mjs"
+    "main": "dist/index.mjs"
  },
  "scripts": {
    "build": "vite build",
--- a/Show More
+++ b/Show More