diff --git a/packages/core/controls.mjs b/packages/core/controls.mjs
index 7e3c2a8e2..a2136367d 100644
--- a/packages/core/controls.mjs
+++ b/packages/core/controls.mjs
@@ -72,6 +72,27 @@ export function registerControl(names, ...aliases) {
   return bag;
 }
 
+export function registerMultiControl(names, maxControls, ...aliases) {
+  names = Array.isArray(names) ? names : [names];
+  let bag = {};
+  for (let i = 1; i <= maxControls; i++) {
+    let theseAliases = [...aliases];
+    let theseNames = [...names];
+    if (i === 1) {
+      // adds e.g. fm1 as an alias for fm
+      const aliases1 = theseAliases.map((a) => `${a}1`);
+      const names1 = theseNames.map((n) => `${n}1`);
+      theseAliases = theseAliases.concat(aliases1).concat(names1);
+    } else {
+      theseAliases = theseAliases.map((a) => `${a}${i}`);
+      theseNames = theseNames.map((n) => `${n}${i}`);
+    }
+    const subBag = registerControl(theseNames, ...theseAliases);
+    bag = { ...bag, ...subBag };
+  }
+  return bag;
+}
+
 /**
  * Select a sound / sample by name. When using mininotation, you can also optionally supply 'n' and 'gain' parameters
  * separated by ':'.
@@ -444,21 +465,22 @@ export const { attack, att } = registerControl('attack', 'att');
  * ._scope()
  *
  */
-export const { fmh } = registerControl(['fmh', 'fmi'], 'fmh');
+export const { fmh, fmh1, fmh2, fmh3, fmh4, fmh5, fmh6, fmh7, fmh8 } = registerMultiControl(['fmh', 'fmi'], 8, 'fmh');
 /**
  * Sets the Frequency Modulation of the synth.
  * Controls the modulation index, which defines the brightness of the sound.
  *
- * @name fm
+ * @name fmi
  * @param {number | Pattern} brightness modulation index
- * @synonyms fmi
+ * @synonyms fm
  * @example
  * note("c e g b g e")
  * .fm("<0 1 2 8 32>")
  * ._scope()
  *
  */
-export const { fmi, fm } = registerControl(['fmi', 'fmh'], 'fm');
+export const { fmi, fmi1, fmi2, fmi3, fmi4, fmi5, fmi6, fmi7, fmi8, fm, fm1, fm2, fm3, fm4, fm5, fm6, fm7, fm8 } =
+  registerMultiControl(['fmi', 'fmh'], 8, 'fm');
 // fm envelope
 /**
  * Ramp type of fm envelope. Exp might be a bit broken..
@@ -474,11 +496,15 @@ export const { fmi, fm } = registerControl(['fmi', 'fmh'], 'fm');
  * ._scope()
  *
  */
-export const { fmenv } = registerControl('fmenv');
+export const { fmenv, fmenv1, fmenv2, fmenv3, fmenv4, fmenv5, fmenv6, fmenv7, fmenv8 } = registerMultiControl(
+  'fmenv',
+  8,
+);
 /**
  * Attack time for the FM envelope: time it takes to reach maximum modulation
  *
  * @name fmattack
+ * @synonyms fmatt
  * @param {number | Pattern} time attack time
  * @example
  * note("c e g b g e")
@@ -487,7 +513,26 @@ export const { fmenv } = registerControl('fmenv');
  * ._scope()
  *
  */
-export const { fmattack } = registerControl('fmattack');
+export const {
+  fmattack,
+  fmattack1,
+  fmattack2,
+  fmattack3,
+  fmattack4,
+  fmattack5,
+  fmattack6,
+  fmattack7,
+  fmattack8,
+  fmatt,
+  fmatt1,
+  fmatt2,
+  fmatt3,
+  fmatt4,
+  fmatt5,
+  fmatt6,
+  fmatt7,
+  fmatt8,
+} = registerMultiControl('fmattack', 8, 'fmatt');
 
 /**
  * Waveform of the fm modulator
@@ -500,12 +545,16 @@ export const { fmattack } = registerControl('fmattack');
  * n("0 1 2 3".fast(4)).chord("<Dm Am F G>").voicing().s("sawtooth").fmwave("brown").fm(.6)
  *
  */
-export const { fmwave } = registerControl('fmwave');
+export const { fmwave, fmwave1, fmwave2, fmwave3, fmwave4, fmwave5, fmwave6, fmwave7, fmwave8 } = registerMultiControl(
+  'fmwave',
+  8,
+);
 
 /**
  * Decay time for the FM envelope: seconds until the sustain level is reached after the attack phase.
  *
  * @name fmdecay
+ * @synonyms fmdec
  * @param {number | Pattern} time decay time
  * @example
  * note("c e g b g e")
@@ -515,11 +564,31 @@ export const { fmwave } = registerControl('fmwave');
  * ._scope()
  *
  */
-export const { fmdecay } = registerControl('fmdecay');
+export const {
+  fmdecay,
+  fmdecay1,
+  fmdecay2,
+  fmdecay3,
+  fmdecay4,
+  fmdecay5,
+  fmdecay6,
+  fmdecay7,
+  fmdecay8,
+  fmdec,
+  fmdec1,
+  fmdec2,
+  fmdec3,
+  fmdec4,
+  fmdec5,
+  fmdec6,
+  fmdec7,
+  fmdec8,
+} = registerMultiControl('fmdecay', 8, 'fmdec');
 /**
  * Sustain level for the FM envelope: how much modulation is applied after the decay phase
  *
  * @name fmsustain
+ * @synonyms fmsus
  * @param {number | Pattern} level sustain level
  * @example
  * note("c e g b g e")
@@ -529,10 +598,61 @@ export const { fmdecay } = registerControl('fmdecay');
  * ._scope()
  *
  */
-export const { fmsustain } = registerControl('fmsustain');
-// these are not really useful... skipping for now
-export const { fmrelease } = registerControl('fmrelease');
-export const { fmvelocity } = registerControl('fmvelocity');
+export const {
+  fmsustain,
+  fmsustain1,
+  fmsustain2,
+  fmsustain3,
+  fmsustain4,
+  fmsustain5,
+  fmsustain6,
+  fmsustain7,
+  fmsustain8,
+  fmsus,
+  fmsus1,
+  fmsus2,
+  fmsus3,
+  fmsus4,
+  fmsus5,
+  fmsus6,
+  fmsus7,
+  fmsus8,
+} = registerMultiControl('fmsustain', 8, 'fmsus');
+/**
+ * Release time for the FM envelope: how much modulation is applied after the note is released
+ *
+ * @name fmrelease
+ * @synonyms fmrel
+ * @param {number | Pattern} time release time
+ *
+ */
+export const {
+  fmrelease,
+  fmrelease1,
+  fmrelease2,
+  fmrelease3,
+  fmrelease4,
+  fmrelease5,
+  fmrelease6,
+  fmrelease7,
+  fmrelease8,
+  fmrel,
+  fmrel1,
+  fmrel2,
+  fmrel3,
+  fmrel4,
+  fmrel5,
+  fmrel6,
+  fmrel7,
+  fmrel8,
+} = registerMultiControl('fmrelease', 8, 'fmrel');
+
+// FM Matrix
+for (let i = 0; i <= 8; i++) {
+  for (let j = 0; j <= 8; j++) {
+    registerControl(`fm${i}${j}`);
+  }
+}
 
 /**
  * Select the sound bank to use. To be used together with `s`. The bank name (+ "_") will be prepended to the value of `s`.
diff --git a/packages/superdough/helpers.mjs b/packages/superdough/helpers.mjs
index 47bca330d..361733f10 100644
--- a/packages/superdough/helpers.mjs
+++ b/packages/superdough/helpers.mjs
@@ -325,7 +325,7 @@ const mod = (freq, range = 1, type = 'sine') => {
   osc.start();
   const g = new GainNode(ctx, { gain: range });
   osc.connect(g); // -range, range
-  return { node: g, stop: (t) => osc.stop(t) };
+  return { fm: osc, scaled: g, stop: (t) => osc.stop(t) };
 };
 const fm = (frequencyparam, harmonicityRatio, modulationIndex, wave = 'sine') => {
   const carrfreq = frequencyparam.value;
@@ -334,48 +334,86 @@ const fm = (frequencyparam, harmonicityRatio, modulationIndex, wave = 'sine') =>
   return mod(modfreq, modgain, wave);
 };
 export function applyFM(param, value, begin) {
-  const {
-    fmh: fmHarmonicity = 1,
-    fmi: fmModulationIndex,
-    fmenv: fmEnvelopeType = 'exp',
-    fmattack: fmAttack,
-    fmdecay: fmDecay,
-    fmsustain: fmSustain,
-    fmrelease: fmRelease,
-    fmvelocity: fmVelocity,
-    fmwave: fmWaveform = 'sine',
-    duration,
-  } = value;
-  let modulator;
-  let stop = () => {};
-
-  if (fmModulationIndex) {
-    const ac = getAudioContext();
-    const envGain = ac.createGain();
-    const fmmod = fm(param, fmHarmonicity, fmModulationIndex, fmWaveform);
-
-    modulator = fmmod.node;
-    stop = fmmod.stop;
-    if (![fmAttack, fmDecay, fmSustain, fmRelease, fmVelocity].some((v) => v !== undefined)) {
-      // no envelope by default
-      modulator.connect(param);
-    } else {
-      const [attack, decay, sustain, release] = getADSRValues([fmAttack, fmDecay, fmSustain, fmRelease]);
-      const holdEnd = begin + duration;
-      getParamADSR(
-        envGain.gain,
-        attack,
-        decay,
-        sustain,
-        release,
-        0,
-        1,
-        begin,
-        holdEnd,
-        fmEnvelopeType === 'exp' ? 'exponential' : 'linear',
-      );
-      modulator.connect(envGain);
-      envGain.connect(param);
+  const ac = getAudioContext();
+  let target = param;
+  let stop = (t) => {};
+  const targets = [param];
+  const modulators = [];
+  for (let i = 0; i < 8; i++) {
+    const iS = `${i === 0 ? '' : i}`;
+    let modulator;
+    const fmModulationIndex = value[`fmi${iS}`];
+    if (fmModulationIndex) {
+      const fmmod = fm(target, value[`fmh${iS}`] ?? 1, fmModulationIndex, value[`fmwave${iS}`] ?? 'sine');
+      modulator = fmmod.scaled;
+      const currStop = stop;
+      stop = (t) => {
+        currStop(t);
+        fmmod.stop(t);
+      };
+      const adsr = ['attack', 'decay', 'sustain', 'release'].map((s) => value[`fm${s}${iS}`]);
+      if (!adsr.some((v) => v !== undefined)) {
+        // no envelope by default
+        modulator.connect(target);
+        modulators.push(modulator);
+      } else {
+        const envGain = ac.createGain();
+        const [attack, decay, sustain, release] = getADSRValues(adsr);
+        const holdEnd = begin + value.duration;
+        const fmEnvelopeType = value[`fmenv${iS}`] ?? 'exp';
+        getParamADSR(
+          envGain.gain,
+          attack,
+          decay,
+          sustain,
+          release,
+          0,
+          1,
+          begin,
+          holdEnd,
+          fmEnvelopeType === 'exp' ? 'exponential' : 'linear',
+        );
+        modulator.connect(envGain);
+        envGain.connect(target);
+        modulators.push(envGain);
+      }
+      targets.push(fmmod.fm?.frequency);
+      if (targets[i]) {
+        // Cannot connect to noises, for example
+        target = targets[i];
+      }
+    }
+  }
+  // Matrix
+  for (let i = 1; i <= 8; i++) {
+    for (let j = 0; j <= 8; j++) {
+      let control;
+      if (i === j + 1) {
+        // Standard fm3 -> fm2 -> fm1 -> param usage
+        control = `fm${i}`;
+      } else {
+        control = `fm${i}${j}`;
+      }
+      const amt = value[control];
+      if (!amt) continue;
+      const source = modulators[i - 1];
+      const target = targets[j];
+      if (!source) {
+        const iS = `${i === 1 ? '' : i}`;
+        logger(
+          `[superdough] failed to connect FM from source ${i} (due to control ${control}): source ${i} does not exist. Please use control fm${iS} to set it up`,
+          'warning',
+        );
+        continue;
+      }
+      if (!target) {
+        logger(
+          `[superdough] failed to connect FM to target ${j} (due to control ${control}): target ${j} does not exist. Please use control fm${j} to set it up`,
+          'warning',
+        );
+        continue;
+      }
+      source.connect(target);
     }
   }
   return { stop };