diff --git a/configure.py b/configure.py
index 980f6ded3..a927a7f23 100755
--- a/configure.py
+++ b/configure.py
@@ -789,7 +789,7 @@ config.libs = [
             Object(Matching,    "JSystem/JAudio/JASRegisterParam.cpp"),
             Object(Matching,    "JSystem/JAudio/JASSeqCtrl.cpp"),
             Object(Matching,    "JSystem/JAudio/JASSeqParser.cpp"),
-            Object(NonMatching, "JSystem/JAudio/JASTrack.cpp"),
+            Object(Matching,    "JSystem/JAudio/JASTrack.cpp"),
             Object(Matching,    "JSystem/JAudio/JASTrackInterrupt.cpp"),
             Object(Matching,    "JSystem/JAudio/JASTrackPort.cpp"),
             Object(Matching,    "JSystem/JAudio/JASBank.cpp"),
diff --git a/include/JSystem/JAudio/JASRegisterParam.h b/include/JSystem/JAudio/JASRegisterParam.h
index e03bc47a6..96145686c 100644
--- a/include/JSystem/JAudio/JASRegisterParam.h
+++ b/include/JSystem/JAudio/JASRegisterParam.h
@@ -22,14 +22,28 @@ namespace JASystem {
             JUT_ASSERT(131, index < 4);
             return field_0x20[index];
         }
-        void setAddress(int, u32) {}
+        void setAddress(int index, u32 value) {
+            JUT_ASSERT(124, index >= 0);
+            JUT_ASSERT(125, index < 4);
+            field_0x20[index] = value;
+        }
 
         void getBendSense() const {}
-        void getPanPowerBank() const {}
-        void getPanPowerExt() const {}
-        void getPanPowerOsc() const {}
-        void getPanPowerParent() const {}
-        void getPanPowerTrack() const {}
+        u16 getPanPowerBank() const {
+            return mPanPower[0];
+        }
+        u16 getPanPowerExt() const {
+            return mPanPower[1];
+        }
+        u16 getPanPowerOsc() const {
+            return mPanPower[2];
+        }
+        u16 getPanPowerParent() const {
+            return mPanPower[3];
+        }
+        u16 getPanPowerTrack() const {
+            return mPanPower[4];
+        }
         void getPriority() const {}
         u16 getFlag() const { return field_0x0[3]; }
         void setFlag(u16 flag) { field_0x0[3] = flag; }
diff --git a/include/JSystem/JAudio/JASTrack.h b/include/JSystem/JAudio/JASTrack.h
index 03efb5392..16d43ffef 100644
--- a/include/JSystem/JAudio/JASTrack.h
+++ b/include/JSystem/JAudio/JASTrack.h
@@ -119,7 +119,24 @@ namespace JASystem {
 
         class AInnerParam_ {
         public:
-            AInnerParam_();
+                AInnerParam_()
+                : mVolume()
+                , mPitch()
+                , mFxmix()
+                , mPan()
+                , mDolby()
+                , _50()
+                , mOsc0Width()
+                , mOsc0Rate()
+                , mOsc0Vertex()
+                , mOsc1Width()
+                , mOsc1Rate()
+                , mOsc1Vertex()
+                , mIIRs()
+                , _100()
+                , _110()
+            {
+            }
 
             /* 0x000 */ MoveParam_ mVolume;
             /* 0x010 */ MoveParam_ mPitch;
@@ -306,7 +323,7 @@ namespace JASystem {
         /* 0x37E */ u8 field_0x37e;
         /* 0x37F */ u8 mCalcTypes[3];
         /* 0x382 */ u8 mParentCalcTypes[3];
-        /* 0x385 */ u8 mIsPaused;
+        /* 0x385 */ bool mIsPaused;
         /* 0x386 */ u8 field_0x386;
         /* 0x387 */ bool field_0x387;
         /* 0x388 */ u8 field_0x388;
diff --git a/include/JSystem/JAudio/JASTrackInterrupt.h b/include/JSystem/JAudio/JASTrackInterrupt.h
index 9ace6130f..711b317cc 100644
--- a/include/JSystem/JAudio/JASTrackInterrupt.h
+++ b/include/JSystem/JAudio/JASTrackInterrupt.h
@@ -4,6 +4,17 @@
 #include "dolphin/types.h"
 
 namespace JASystem {
+    enum RequestId {
+        REQUEST_UNK_0 = 0,
+        REQUEST_UNK_1 = 1,
+        REQUEST_UNK_2 = 2,
+        REQUEST_UNK_3 = 3,
+        REQUEST_UNK_4 = 4,
+        REQUEST_UNK_5 = 5,
+        REQUEST_UNK_6 = 6,
+        REQUEST_UNK_7 = 7,
+    };
+
     class TIntrMgr {
     public:
         void disable() { field_0x0 = 0; }
diff --git a/include/dolphin/os/OS.h b/include/dolphin/os/OS.h
index 22b061215..00dfe288a 100644
--- a/include/dolphin/os/OS.h
+++ b/include/dolphin/os/OS.h
@@ -155,6 +155,27 @@ inline void OSf32tou8(f32* f, u8* out) {
     *out = __OSf32tou8(*f);
 }
 
+inline s8 __OSf32tos8(register f32 inF) {
+    register u8 out;
+    u32 tmp;
+    register u32* tmpPtr = &tmp;
+    // clang-format off
+#ifdef __MWERKS__
+    asm {
+        psq_st inF, 0(tmpPtr), 0x1, 4
+        lbz out, 0(tmpPtr)
+        extsb out, out
+    }
+#endif
+    // clang-format on
+
+    return out;
+}
+
+inline void OSf32tos8(f32* f, s8* out) {
+    *out = __OSf32tos8(*f);
+}
+
 static inline void OSInitFastCast(void) {
     // clang-format off
 #ifdef __MWERKS__
diff --git a/src/JSystem/JAudio/JASTrack.cpp b/src/JSystem/JAudio/JASTrack.cpp
index 475e52d4a..6aa491d6b 100644
--- a/src/JSystem/JAudio/JASTrack.cpp
+++ b/src/JSystem/JAudio/JASTrack.cpp
@@ -143,7 +143,7 @@ s8 JASystem::TTrack::mainProc() {
             mParent->mChannelUpdater.field_0x0++;
         }
     }
-    mIntrMgr.request(7);
+    mIntrMgr.request(REQUEST_UNK_7);
     mIntrMgr.timerProcess();
     tryInterrupt();
     if (mIsPaused == 0 || (mPauseStatus & 2) == 0) {
@@ -319,7 +319,7 @@ int JASystem::TTrack::noteOn(u8 param_1, s32 param_2, s32 param_3, s32 param_4,
     }
     mNoteMgr.setChannel(param_1, channel);
     channel->field_0xe8 = param_5;
-    channel->setPanPower(mRegisterParam.mPanPower[0], mRegisterParam.mPanPower[1], mRegisterParam.mPanPower[2], 0.0f);
+    channel->setPanPower(mRegisterParam.getPanPowerBank(), mRegisterParam.getPanPowerExt(), mRegisterParam.getPanPowerOsc(), 0.0f);
     overwriteOsc(channel);
     if (field_0x374) {
         channel->directReleaseOsc(0, field_0x374);
@@ -498,30 +498,248 @@ void JASystem::TTrack::updateTimedParam() {
 
 /* 80281AA4-80281E90       .text updateTrackAll__Q28JASystem6TTrackFv */
 void JASystem::TTrack::updateTrackAll() {
-    /* Nonmatching */
     if (field_0x37b == 4) {
         return;
     }
 
-    f32 panWeight = mRegisterParam.field_0x20[0] / 32767.0f;
-    mChannelUpdater.field_0x68 = mTimedParam.mMoveParams[TIMED_IIR_Unk2].mCurrentValue;
+    f32 pitch;
+    f32 vol;
+    f32 pan;
+    f32 fx_vol;
+    f32 dolby;
+
+    f32 pan_weight = mRegisterParam.getPanPowerParent() / 32767.0f;
+    mChannelUpdater.field_0x68 = mRegisterParam.field_0x1a | 0x10000;
     mChannelUpdater.field_0x6c = 0;
 
-    f32 delay = mTimedParam.mMoveParams[TIMED_Osc1_Rate].mCurrentValue * 128.0f;
-    panCalc(panWeight, delay, 0.0f, 1);
+    f32 delayF = mTimedParam.mMoveParams[TIMED_Unk17].mCurrentValue * 128.0f;
+    s8 delay;
+    s8 unk = 0;
+    OSf32tos8(&delayF, &delay);
+    if (delay < 0) {
+        unk = -delay;
+        delay = 0;
+    }
 
-    // if (...) {
-    //}
-    // else {
-    //
-        mChannelUpdater.field_0x61 = mChannelUpdater.field_0x61 | 0x20;
+    mChannelUpdater.field_0x60 = 16;
+    mChannelUpdater.field_0x5a[0] = unk;
+    mChannelUpdater.field_0x5a[1] = delay;
+
+    vol = mTimedParam.mMoveParams[TIMED_Volume].mCurrentValue;
+    if (mVolumeMode == 0) {
+        vol *= vol;
+    }
+    if (field_0x386) {
+        vol = 0.0f;
+    }
+
+    f32 cent = Player::pitchToCent(mTimedParam.mMoveParams[TIMED_Pitch].mCurrentValue,
+        mRegisterParam.field_0xe);
+    pitch = cent * mVibrate.getValue();
+
+    pan = mTimedParam.mMoveParams[TIMED_Pan].mCurrentValue;
+    fx_vol = mTimedParam.mMoveParams[TIMED_Fxmix].mCurrentValue;
+    dolby = mTimedParam.mMoveParams[TIMED_Dolby].mCurrentValue;
+
+    if (mOuterParam) {
+        if (mOuterParam->checkOuterSwitch(OUTERPARAM_Volume)) {
+            vol *= mOuterParam->getVolume();
+        }
+        if (mOuterParam->checkOuterSwitch(OUTERPARAM_Pitch)) {
+            pitch *= mOuterParam->getPitch();
+        }
+        if (mOuterParam->checkOuterSwitch(OUTERPARAM_Fxmix)) {
+            fx_vol = panCalc(fx_vol, mOuterParam->getFxVol(), pan_weight, mCalcTypes[1]);
+        }
+        if (mOuterParam->checkOuterSwitch(OUTERPARAM_Dolby)) {
+            dolby = panCalc(dolby, mOuterParam->getDolby(), pan_weight, mCalcTypes[2]);
+        }
+        if (mOuterParam->checkOuterSwitch(OUTERPARAM_Pan)) {
+            pan = panCalc(pan, mOuterParam->getPan(), pan_weight, mCalcTypes[0]);
+        }
+    }
+
+    if (mParent == NULL || (field_0x37b & 1)) {
+        mChannelUpdater.field_0x18 = vol;
+        mChannelUpdater.field_0x1c = pitch;
+        mChannelUpdater.field_0x20 = pan;
+        mChannelUpdater.field_0x24 = fx_vol;
+        mChannelUpdater.field_0x28 = dolby;
+    } else {
+        pan_weight = mRegisterParam.getPanPowerTrack() / 32767.0f;
+
+        mChannelUpdater.field_0x18 = mParent->mChannelUpdater.field_0x18 * vol;
+        mChannelUpdater.field_0x1c = mParent->mChannelUpdater.field_0x1c * pitch;
+        mChannelUpdater.field_0x20 = panCalc(
+            pan, mParent->mChannelUpdater.field_0x20, pan_weight, mParentCalcTypes[0]
+        );
+        mChannelUpdater.field_0x24 = panCalc(
+            fx_vol, mParent->mChannelUpdater.field_0x24, pan_weight, mParentCalcTypes[1]
+        );
+        mChannelUpdater.field_0x28 = panCalc(
+            dolby, mParent->mChannelUpdater.field_0x28, pan_weight, mParentCalcTypes[2]
+        );
+
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_FIR8Filter)) {
+            for (u8 i = 0; i < 8; i++) {
+                mChannelUpdater.field_0x2c[i] = mOuterParam->getIntFirFilter(i);
+            }
+            mChannelUpdater.field_0x61 = 8;
+        }
+
+        for (u8 i = 0; i < 4; i++) {
+            mChannelUpdater.field_0x3c[i] = mTimedParam.mMoveParams[TIMED_IIR_Unk0 + i].mCurrentValue * 32767.0f;
+        }
+
+        mChannelUpdater.field_0x61 |= 0x20;
         mChannelUpdater.field_0x4c = mTimedParam.mMoveParams[TIMED_Unk5].mCurrentValue * 32767.0f;
-    // }
+    }
 }
 
 /* 80281E90-80282364       .text updateTrack__Q28JASystem6TTrackFUl */
-void JASystem::TTrack::updateTrack(u32) {
-    /* Nonmatching */
+void JASystem::TTrack::updateTrack(u32 flags) {
+    if (field_0x37b == 4) {
+        return;
+    }
+
+    f32 pitch;
+    f32 vol;
+    f32 pan;
+    f32 fx_vol;
+    f32 dolby;
+
+    f32 pan_weight = mRegisterParam.getPanPowerParent() / 32767.0f;
+    if (flags & OUTERPARAM_Unk18) {
+        f32 unkF = mTimedParam.mMoveParams[TIMED_Unk17].mCurrentValue * 128.0f;
+        s8 unk = 0;
+        s8 delay;
+        OSf32tos8(&unkF, &delay);
+        if (delay < 0) {
+            unk = -delay;
+            delay = 0;
+        }
+
+        mChannelUpdater.field_0x5a[0] = unk;
+        mChannelUpdater.field_0x5a[1] = delay;
+    }
+
+    if (flags & OUTERPARAM_Tempo && mParent == NULL) {
+        updateTempo();
+    }
+
+    pitch = 1.0f;
+
+    u32 set_volume = flags & OUTERPARAM_Volume;
+    if (set_volume) {
+        vol = mTimedParam.mMoveParams[TIMED_Volume].mCurrentValue;
+        if (mVolumeMode == 0) {
+            vol *= vol;
+        }
+        if (field_0x386) {
+            vol = 0.0f;
+        }
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_Volume)) {
+            vol *= mOuterParam->getVolume();
+        }
+        if (mIsPaused && (mPauseStatus & 1)) {
+            vol *= mTimedParam.mMoveParams[TIMED_Unk16].mCurrentValue;
+        }
+    }
+
+    u32 set_pitch = flags & OUTERPARAM_Pitch;
+    if (set_pitch) {
+        pitch = Player::pitchToCent(mTimedParam.mMoveParams[TIMED_Pitch].mCurrentValue,
+            mRegisterParam.field_0xe);
+        pitch *= mVibrate.getValue();
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_Pitch)) {
+            pitch *= mOuterParam->getPitch();
+        }
+    }
+
+    u32 set_pan = flags & OUTERPARAM_Pan;
+    if (set_pan) {
+        pan = mTimedParam.mMoveParams[TIMED_Pan].mCurrentValue;
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_Pan)) {
+            pan = panCalc(pan, mOuterParam->getPan(), pan_weight, mCalcTypes[0]);
+        }
+    }
+
+
+    u32 set_fxvol = flags & OUTERPARAM_Fxmix;
+    if (set_fxvol) {
+        fx_vol = mTimedParam.mMoveParams[TIMED_Fxmix].mCurrentValue;
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_Fxmix)) {
+            fx_vol = panCalc(fx_vol, mOuterParam->getFxVol(), pan_weight, mCalcTypes[1]);
+        }
+    }
+
+
+    u32 set_dolby = flags & OUTERPARAM_Dolby;
+    if (set_dolby) {
+        dolby = mTimedParam.mMoveParams[TIMED_Dolby].mCurrentValue;
+        if (mOuterParam && mOuterParam->checkOuterSwitch(OUTERPARAM_Dolby)) {
+            dolby = panCalc(dolby, mOuterParam->getDolby(), pan_weight, mCalcTypes[2]);
+        }
+    }
+
+    if (flags & OUTERPARAM_IIRFilter) {
+        for (u8 i = 0; i < 4; i++) {
+            mChannelUpdater.field_0x3c[i] = mTimedParam.mMoveParams[TIMED_IIR_Unk0 + i].mCurrentValue * 32767.0f;
+        }
+        mChannelUpdater.field_0x61 |= 0x20;
+    }
+
+    if (mOuterParam && (flags & OUTERPARAM_FIR8Filter) && mOuterParam->checkOuterSwitch(OUTERPARAM_FIR8Filter)) {
+        for (u8 i = 0; i < 8; i++) {
+            mChannelUpdater.field_0x2c[i] = mOuterParam->getIntFirFilter(i);
+        }
+        mChannelUpdater.field_0x61 = (mChannelUpdater.field_0x61 & 0x20) + 8;
+    }
+
+    if (flags & OUTERPARAM_Unk6) {
+        mChannelUpdater.field_0x4c = mTimedParam.mMoveParams[TIMED_Unk5].mCurrentValue * 32767.0f;
+    }
+
+    if (mParent == NULL || (field_0x37b & 1)) {
+        if (set_volume) {
+            mChannelUpdater.field_0x18 = vol;
+        }
+        if (set_pitch) {
+            mChannelUpdater.field_0x1c = pitch;
+        }
+        if (set_pan) {
+            mChannelUpdater.field_0x20 = pan;
+        }
+        if (set_fxvol) {
+            mChannelUpdater.field_0x24 = fx_vol;
+        }
+        if (set_dolby) {
+            mChannelUpdater.field_0x28 = dolby;
+        }
+    } else {
+        pan_weight = mRegisterParam.getPanPowerTrack() / 32767.0f;
+        if (set_volume) {
+            mChannelUpdater.field_0x18 = mParent->mChannelUpdater.field_0x18 * vol;
+        }
+        if (set_pitch) {
+            mChannelUpdater.field_0x1c = mParent->mChannelUpdater.field_0x1c * pitch;
+        }
+        if (set_pan) {
+            mChannelUpdater.field_0x20 = panCalc(
+                pan, mParent->mChannelUpdater.field_0x20, pan_weight, mParentCalcTypes[0]
+            );
+        }
+        if (set_fxvol) {
+            mChannelUpdater.field_0x24 = panCalc(
+                fx_vol, mParent->mChannelUpdater.field_0x24, pan_weight, mParentCalcTypes[1]
+            );
+        }
+        if (set_dolby) {
+            mChannelUpdater.field_0x28 = panCalc(
+                dolby, mParent->mChannelUpdater.field_0x28, pan_weight, mParentCalcTypes[2]
+            );
+        }
+    }
 }
 
 /* 80282364-802824C0       .text updateTempo__Q28JASystem6TTrackFv */
@@ -891,8 +1109,207 @@ void JASystem::TTrack::writeRegDirect(u8 target, u16 value) {
 }
 
 /* 80283164-802836FC       .text writeRegParam__Q28JASystem6TTrackFUc */
-void JASystem::TTrack::writeRegParam(u8) {
+void JASystem::TTrack::writeRegParam(u8 param) {
     /* Nonmatching */
+    u8 curr_file_byte;
+    u8 bVar0;
+    u8 bVar1;
+
+    u32 iVar1;
+    u32 iVar2;
+    u32 tbl_param_3;
+    u32 tbl_param_1;
+
+    s16 sVar0;
+    s16 sVar1;
+    u32 extended_sVar1;
+    u32 tbl_return;
+
+    switch (param & 0xF) {
+        case 11:
+            iVar1 = 0;
+            iVar2 = 11;
+            break;
+        case 10:
+            curr_file_byte = *mSeqCtrl.mCurrentFilePtr++;
+            iVar1 = curr_file_byte & 0xC;
+            tbl_param_3 = (curr_file_byte >> 4) + 4;
+            iVar2 = 10;
+            break;
+        case 9:
+            curr_file_byte = *mSeqCtrl.mCurrentFilePtr++;
+            iVar1 = curr_file_byte & 0xC;
+            iVar2 = curr_file_byte & 0xF0;
+            if (iVar1 == 8) {
+                iVar1 = 16;
+            }
+            break;
+        default:
+            iVar1 = param & 0xC;
+            iVar2 = param & 0x3;
+            break;
+    }
+
+    bVar0 = *mSeqCtrl.mCurrentFilePtr++;
+    if (iVar2 == 10) {
+        u8 next_file_byte = *mSeqCtrl.mCurrentFilePtr++;
+        tbl_param_1 = readReg32(next_file_byte);
+    }
+
+    switch (iVar1) {
+        case 0:
+            bVar1 = *mSeqCtrl.mCurrentFilePtr++;
+            sVar0 = readReg16(bVar1);
+            break;
+        case 4:
+            sVar0 = *mSeqCtrl.mCurrentFilePtr++;
+            break;
+        case 12:
+            sVar0 = mSeqCtrl.read16();
+            break;
+        case 8: {
+            u32 byte = (u32) *mSeqCtrl.mCurrentFilePtr++;
+            if (byte & 0x80) {
+                sVar0 = byte << 8;
+            } else {
+                sVar0 = (byte << 8) | (byte << 1);
+            }
+            break;
+        }
+        case 16:
+            sVar0 = -1;
+            break;
+    }
+
+    sVar1 = readReg16(bVar0);
+    extended_sVar1 = sVar1;
+
+    switch (iVar2) {
+        case 0x0:
+            break;
+        case 0x1:
+            if (iVar1 == 4) {
+                sVar0 = Player::extend8to16(sVar0);
+            }
+            sVar0 += sVar1;
+            break;
+        case 0x2:
+            extended_sVar1 *= sVar0;
+            writeRegDirect(4, extended_sVar1 >> 16);
+            writeRegDirect(5, extended_sVar1 & 0xFFFF);
+            return;
+        case 0x3:
+            mRegisterParam.setFlag(sVar1 - sVar0);
+            return;
+        case 0xB:
+            sVar0 = extended_sVar1 - (u32)sVar0;
+            break;
+        case 0x10:
+            if (iVar1 == 4) {
+                sVar0 = Player::extend8to16(sVar0);
+            }
+            if (sVar0 < 0) {
+                sVar0 = (u16)sVar1 >> -sVar0;
+            } else {
+                sVar0 = (u16)sVar1 << sVar0;
+            }
+            break;
+        case 0x20:
+            if (iVar1 == 4) {
+                sVar0 = Player::extend8to16(sVar0);
+            }
+            if (sVar0 < 0) {
+                sVar0 = sVar1 >> -sVar0;
+            } else {
+                sVar0 = sVar1 << sVar0;
+            }
+            break;
+        case 0x30:
+            sVar0 &= sVar1;
+            break;
+        case 0x40:
+            sVar0 |= sVar1;
+            break;
+        case 0x50:
+            sVar0 ^= sVar1;
+            break;
+        case 0x60:
+            sVar0 = -sVar1;
+            break;
+        case 0x90:
+            tbl_return = (u32)Player::getRandomS32();
+            sVar0 = tbl_return % (u16)sVar0;
+            break;
+        case 0xA:
+            tbl_return = loadTbl(tbl_param_1, sVar0, tbl_param_3);
+            sVar0 = tbl_return & 0xFFFF;
+            break;
+    }
+
+    u16 reg_flags;
+    switch (bVar0) {
+        case 0:
+        case 1:
+        case 2: {
+            u8 val3 = sVar0 & 0xFF;
+            sVar0 = val3;
+            reg_flags = Player::extend8to16(val3);
+            break;
+        }
+        case 0x21: {
+            u8 bank = mRegisterParam.getBankNumber();
+            sVar0 = (bank << 8) | (sVar0 & 0xFF);
+            bVar0 = 6;
+            break;
+        }
+        case 0x20:
+            sVar0 = mRegisterParam.getProgramNumber() | ((s16)sVar0 << 8);
+            bVar0 = 6;
+            break;
+        case 0x2E:
+            sVar0 = (mRegisterParam.field_0x1a & 0xFF00) | (sVar0 & 0xFF);
+            bVar0 = 13;
+            break;
+        case 0x2F: {
+            s16 tmp = (mRegisterParam.field_0x1a & 0xFF);
+            sVar0 = tmp | (sVar0 << 8);
+            bVar0 = 13;
+            break;
+        }
+        case 0x22:
+            writeRegDirect(0, sVar0 >> 8);
+            bVar0 = 1;
+            sVar0 = sVar0 & 0xFF;
+            reg_flags = sVar0;
+            break;
+        case 0x28:
+        case 0x29:
+        case 0x2a:
+        case 0x2b:
+            mRegisterParam.setAddress(bVar0 - 0x28, tbl_return);
+            return;
+        default:
+            reg_flags = sVar0;
+            break;
+    }
+
+    mRegisterParam.field_0x0[bVar0] = sVar0;
+    mRegisterParam.setFlag(reg_flags);
+
+    switch (bVar0) {
+        case 6:
+            for (s32 i = 0; i < (s32)ARRAY_SIZE(mOscRoute); i++) {
+                mOscRoute[i] = 0xF;
+            }
+            break;
+        case 7:
+            mUpdateFlags |= OUTERPARAM_Pitch;
+            break;
+        case 13:
+            mChannelUpdater.field_0x68 = mRegisterParam.field_0x1a | 0x10000;
+            mChannelUpdater.field_0x6c = 0;
+            break;
+    }
 }
 
 /* 802836FC-80283720       .text readSelfPort__Q28JASystem6TTrackFi */
@@ -912,11 +1329,7 @@ int JASystem::TTrack::writePortAppDirect(u32 port, u16 value) {
     if (port == 0 || port == 1) {
         TIntrMgr& intrMgr = mIntrMgr;
 
-        u32 mIntrParam = 4;
-        if (port == 0) {
-            mIntrParam = 3;
-        }
-
+        u32 mIntrParam = port == 0 ? REQUEST_UNK_3 : REQUEST_UNK_4;
         intrMgr.request(mIntrParam);
     }
     return 1;
@@ -965,7 +1378,6 @@ int JASystem::TTrack::readPortApp(u32 route, u16* value_out) {
 
 /* 802838C4-80283A64       .text pause__Q28JASystem6TTrackFbb */
 void JASystem::TTrack::pause(bool pause, bool pause_children) {
-    /* Nonmatching */
     mIsPaused = pause;
 
     if (pause) {
@@ -997,7 +1409,7 @@ void JASystem::TTrack::pause(bool pause, bool pause_children) {
         }
     }
 
-    mIntrMgr.request(pause ? 0 : 1);
+    mIntrMgr.request(pause ? REQUEST_UNK_0 : REQUEST_UNK_1);
 
     if (pause_children) {
         for (s32 i = 0; i < MAX_CHILDREN; i++) {
@@ -1156,23 +1568,3 @@ f32 JASystem::TVibrate::getValue() const {
     }
     return Player::pitchToCent(sin_val * mDepth, 12.0f);
 }
-
-/* 80283FE8-80284118       .text __ct__Q38JASystem6TTrack12AInnerParam_Fv */
-JASystem::TTrack::AInnerParam_::AInnerParam_()
-    : mVolume()
-    , mPitch()
-    , mFxmix()
-    , mPan()
-    , mDolby()
-    , _50()
-    , mOsc0Width()
-    , mOsc0Rate()
-    , mOsc0Vertex()
-    , mOsc1Width()
-    , mOsc1Rate()
-    , mOsc1Vertex()
-    , mIIRs()
-    , _100()
-    , _110()
-{
-}
diff --git a/src/JSystem/JAudio/JASTrackInterrupt.cpp b/src/JSystem/JAudio/JASTrackInterrupt.cpp
index 7ed8ea7c0..dc9880d88 100644
--- a/src/JSystem/JAudio/JASTrackInterrupt.cpp
+++ b/src/JSystem/JAudio/JASTrackInterrupt.cpp
@@ -63,7 +63,7 @@ void JASystem::TIntrMgr::timerProcess() {
     if (field_0x4 != 0) {
         return;
     }
-    request(6);
+    request(REQUEST_UNK_6);
     if (field_0x3) {
         field_0x3--;
         if (field_0x3) {