diff --git a/configure.py b/configure.py
index d4af17b5b..2b8ce73b2 100644
--- a/configure.py
+++ b/configure.py
@@ -764,7 +764,7 @@ config.libs = [
             Object(NonMatching, "JSystem/JAudio/JAISound.cpp"),
             Object(NonMatching, "JSystem/JAudio/JAISoundTable.cpp"),
             Object(NonMatching, "JSystem/JAudio/JAIStreamMgr.cpp"),
-            Object(NonMatching, "JSystem/JAudio/JAISystemInterface.cpp"),
+            Object(Matching,    "JSystem/JAudio/JAISystemInterface.cpp"),
         ],
     ),
     JSystemLib(
diff --git a/include/JSystem/JAudio/JAISequenceMgr.h b/include/JSystem/JAudio/JAISequenceMgr.h
index 58b781a43..fe15deaf0 100644
--- a/include/JSystem/JAudio/JAISequenceMgr.h
+++ b/include/JSystem/JAudio/JAISequenceMgr.h
@@ -17,18 +17,20 @@ namespace JAInter {
         PlayerParameter();
         ~PlayerParameter();
 
-        /* 0x00 */ int field_0x0;
-        /* 0x04 */ int field_0x4;
-        /* 0x08 */ int field_0x8;
-        /* 0x0C */ int field_0xc;
-        /* 0x10 */ int field_0x10;
-        /* 0x14 */ int field_0x14;
-        /* 0x18 */ int field_0x18;
-        /* 0x1C */ int field_0x1c;
-        /* 0x20 */ int field_0x20;
-        /* 0x24 */ int field_0x24;
-        /* 0x28 */ int field_0x28;
-        /* 0x2C */ JASystem::Kernel::TPortCmd field_0x2c;
+        // fake struct to match JAInter::SystemInterface::setSeqPortargsF32 and JAInter::SystemInterface::setSeqPortargsU32
+        union PortArg {
+            f32 f32;
+            u32 u32;
+            s16* ps16;
+        };
+
+        /* 0x00 */ JASystem::TTrack* mTrack;
+        // /* 0x04 */ JASystem::Kernel::TPortArgs mPortArgs;
+        /* 0x04 */ union {
+            PortArg asArray[10];
+            JASystem::Kernel::TPortArgs asStruct;
+        } mPortArgs;
+        /* 0x2C */ JASystem::Kernel::TPortCmd mCommand;
     };
 
     class SeqUpdateData {
@@ -41,12 +43,12 @@ namespace JAInter {
         /* 0x03 */ u8 field_0x3;
         /* 0x04 */ int field_0x4;
         /* 0x08 */ int field_0x8;
-        /* 0x0C */ f32 field_0xc;
-        /* 0x10 */ f32 field_0x10;
-        /* 0x14 */ f32 field_0x14;
-        /* 0x18 */ f32 field_0x18;
-        /* 0x1C */ f32 field_0x1c;
-        /* 0x20 */ f32 field_0x20;
+        /* 0x0C */ f32 mSeqVolume;
+        /* 0x10 */ f32 mSeqPitch;
+        /* 0x14 */ f32 mSeqFxmix;
+        /* 0x18 */ f32 mSeqPan;
+        /* 0x1C */ f32 mSeqDolby;
+        /* 0x20 */ f32 mSeqTempo;
         /* 0x24 */ f32* trackVolume;
         /* 0x28 */ f32* trackPitch;
         /* 0x2C */ f32* trackFxmix;
@@ -77,20 +79,21 @@ namespace JAInter {
     class SeqParameter {
     public:
         SeqParameter() {}
-        int init();
+        void init() {}
+        JASystem::TTrack* getRootTrackPointer() { return &mTrack; }
 
-        /* 0x0000 */ MoveParaSet field_0x0;
+        /* 0x0000 */ MoveParaSet mTempo;
         /* 0x0010 */ MoveParaSet field_0x10[16];
-        /* 0x0110 */ MoveParaSet field_0x110[20];
+        /* 0x0110 */ MoveParaSet mVolumes[20];
         /* 0x0250 */ MoveParaSet* seqPan;
         /* 0x0254 */ MoveParaSet* seqPitch;
         /* 0x0258 */ MoveParaSet* seqFxmix;
         /* 0x025C */ MoveParaSet* seqDolby;
-        /* 0x0260 */ MoveParaSet field_0x260[32];
-        /* 0x0460 */ MoveParaSet field_0x460[32];
-        /* 0x0660 */ MoveParaSet field_0x660[32];
-        /* 0x0860 */ MoveParaSet field_0x860[32];
-        /* 0x0A60 */ MoveParaSet field_0xa60[32];
+        /* 0x0260 */ MoveParaSet mTrackVolumes[32];
+        /* 0x0460 */ MoveParaSetInitHalf mTrackPans[32];
+        /* 0x0660 */ MoveParaSet mTrackPitches[32];
+        /* 0x0860 */ MoveParaSetInitZero mTrackFxmixes[32];
+        /* 0x0A60 */ MoveParaSetInitZero mTrackDolbys[32];
         /* 0x0C60 */ MoveParaSet field_0xc60[32];
         /* 0x0E60 */ u8 field_0xe60[0x1261 - 0xe60];
         /* 0x1261 */ u8 field_0x1261;
@@ -106,9 +109,9 @@ namespace JAInter {
         /* 0x1298 */ int field_0x1298;
         /* 0x129C */ int field_0x129c[32];
         /* 0x131C */ u8 field_0x131c[32];
-        /* 0x133C */ MuteBit field_0x133c[32];
+        /* 0x133C */ MuteBit mMuteBits[32];
         /* 0x135C */ SeqUpdateData* field_0x135c;
-        /* 0x1360 */ JASystem::TTrack field_0x1360;
+        /* 0x1360 */ JASystem::TTrack mTrack;
         /* 0x16EC */ JASystem::TTrack::TOuterParam field_0x16ec;
     };
 
diff --git a/include/JSystem/JAudio/JAISound.h b/include/JSystem/JAudio/JAISound.h
index daa6a02d4..6be4b0552 100644
--- a/include/JSystem/JAudio/JAISound.h
+++ b/include/JSystem/JAudio/JAISound.h
@@ -126,8 +126,8 @@ public:
     /* 0x07 */ u8 field_0x7;
     /* 0x08 */ u8 field_0x8;
     /* 0x09 */ u8 field_0x9;
-    /* 0x0a */ short field_0xa;
-    /* 0x0c */ int field_0xc;
+    /* 0x0a */ s16 field_0xa;
+    /* 0x0c */ u32 mSoundID;
     /* 0x10 */ int field_0x10;
     /* 0x14 */ u32 field_0x14;
     /* 0x18 */ int field_0x18;
@@ -150,16 +150,16 @@ namespace JAInter {
         int set(f32 param_1, u32 param_2);
         bool move();
 
-        void init(f32 param_1) {
-            field_0x4 = param_1;
-            field_0x0 = param_1;
-            field_0xc = 0;
+        void init(f32 value) {
+            mCurrentValue = value;
+            mTargetValue = value;
+            mMoveCounter = 0;
         }
 
-        /* 0x00 */ f32 field_0x0;
-        /* 0x04 */ f32 field_0x4;
-        /* 0x08 */ f32 field_0x8;
-        /* 0x0C */ int field_0xc;
+        /* 0x00 */ f32 mTargetValue;
+        /* 0x04 */ f32 mCurrentValue;
+        /* 0x08 */ f32 mMoveAmount;
+        /* 0x0C */ int mMoveCounter;
     };
 
     class MoveParaSetInitHalf : public MoveParaSet {
@@ -184,4 +184,11 @@ namespace JAInter {
     };
 }
 
+#define IsJAISoundIDInUse(id)    (((id)&0x800) == 0)
+#define IsJAISoundIDFree(id)     (((id)&0x800) == 1)
+#define JAISoundID_TypeMask      0xC0000000
+#define JAISoundID_Type_Se       0x00000000
+#define JAISoundID_Type_Sequence 0x80000000
+#define JAISoundID_Type_Stream   0xC0000000
+
 #endif /* JAISOUND_H */
diff --git a/include/JSystem/JAudio/JAISystemInterface.h b/include/JSystem/JAudio/JAISystemInterface.h
index 7f7f82f5d..5261c4331 100644
--- a/include/JSystem/JAudio/JAISystemInterface.h
+++ b/include/JSystem/JAudio/JAISystemInterface.h
@@ -17,7 +17,7 @@ namespace JAInter {
     namespace SystemInterface {
         BOOL checkFileExsistence(char*);
         int checkSeqActiveFlag(JASystem::TTrack*);
-        void trackToSeqp(JAISound*, u8);
+        JASystem::TTrack* trackToSeqp(JAISound*, u8);
         void setSeqPortargsF32(JAInter::SeqUpdateData*, u32, u8, f32);
         void setSeqPortargsU32(JAInter::SeqUpdateData*, u32, u8, u32);
         void rootInit(JAInter::SeqUpdateData*);
diff --git a/include/JSystem/JAudio/JASCmdStack.h b/include/JSystem/JAudio/JASCmdStack.h
index f0ba1cdf9..240e2fe05 100644
--- a/include/JSystem/JAudio/JASCmdStack.h
+++ b/include/JSystem/JAudio/JASCmdStack.h
@@ -1,12 +1,27 @@
 #ifndef JASCMDSTACK_H
 #define JASCMDSTACK_H
 
+#include "JSystem/JAudio/JASTrack.h"
 #include "dolphin/types.h"
 
 namespace JASystem {
     namespace Kernel {
-        class TPortArgs;
+        class TPortArgs {
+        public:
+            /* 0x00 */ TTrack* mTrack;
+            /* 0x04 */ u32 mFlags;
+            /* 0x08 */ f32 mTrackVolume;
+            /* 0x0C */ f32 mTrackPitch;
+            /* 0x10 */ f32 mTrackPan;
+            /* 0x14 */ f32 mTrackFxmix;
+            /* 0x18 */ f32 mTrackDolby;
+            /* 0x1C */ f32 _1C;
+            /* 0x20 */ u32 _20;
+            /* 0x24 */ f32 mTrackTempo;
+        };
+
         class TPortCmd;
+
         class TPortHead {
         public:
             /* 0x00 */ TPortCmd* field_0x0;
diff --git a/include/JSystem/JAudio/JASTrack.h b/include/JSystem/JAudio/JASTrack.h
index b4fda2884..24ac75c2e 100644
--- a/include/JSystem/JAudio/JASTrack.h
+++ b/include/JSystem/JAudio/JASTrack.h
@@ -10,6 +10,24 @@
 #include "JSystem/JAudio/JASTrackPort.h"
 #include "JSystem/JUtility/JUTAssert.h"
 
+enum JASOuterParamFlag {
+    OUTERPARAM_Volume     = 0x01,
+    OUTERPARAM_Pitch      = 0x02,
+    OUTERPARAM_Fxmix      = 0x04,
+    OUTERPARAM_Pan        = 0x08,
+    OUTERPARAM_Dolby      = 0x10,
+    OUTERPARAM_Unk6       = 0x20,
+    OUTERPARAM_Tempo      = 0x40,
+    OUTERPARAM_FIR8Filter = 0x80,
+    OUTERPARAM_IIR0       = 0x1000,
+    OUTERPARAM_IIR1       = 0x2000,
+    OUTERPARAM_IIR2       = 0x4000,
+    OUTERPARAM_IIR3       = 0x8000,
+    OUTERPARAM_Unk18      = 0x20000,
+
+    OUTERPARAM_IIRFilter = OUTERPARAM_IIR0 | OUTERPARAM_IIR1 | OUTERPARAM_IIR2 | OUTERPARAM_IIR3,
+};
+
 namespace JASystem {
     class TChannel;
 
@@ -164,6 +182,22 @@ namespace JASystem {
             return mChildren[index];
         }
 
+        TOuterParam* getOuterParam() { return mOuterParam; }
+
+        void checkExport(int) const {}
+        void checkImport(int) const {}
+        void getActivity() const {}
+        void getRoute() const {}
+        void getSeq() {}
+        // void operator delete(void*, u32) {}
+        // void* operator new(size_t) {}
+        void pauseTrackAll() {}
+        void setPanPower(int, u16) {}
+        void setPauseStatus(u8) {}
+        void setTranspose(s32) {}
+        void setVolumeMode(u8) {}
+        void unPauseTrackAll() {}
+
         /* 0x000 */ union {
             TSeqCtrl field_0x0;
             TTrack* next;
@@ -181,7 +215,7 @@ namespace JASystem {
         /* 0x304 */ short field_0x304[12];
         /* 0x31C */ TTrack* mParent;
         /* 0x320 */ TTrack* mChildren[MAX_CHILDREN];
-        /* 0x360 */ TOuterParam* field_0x360;
+        /* 0x360 */ TOuterParam* mOuterParam;
         /* 0x364 */ f32 field_0x364;
         /* 0x368 */ f32 field_0x368;
         /* 0x36C */ int field_0x36c;
diff --git a/src/JAZelAudio/JAIZelBasic.cpp b/src/JAZelAudio/JAIZelBasic.cpp
index 401fdbc8c..ee24ac8ce 100644
--- a/src/JAZelAudio/JAIZelBasic.cpp
+++ b/src/JAZelAudio/JAIZelBasic.cpp
@@ -419,7 +419,7 @@ void JAIZelBasic::onEnemyDamage() {
         }
     } else if (mSubBgmNum == JA_BGM_BATTLE_NORM) {
         if (mpSubBgmSound) {
-            JASystem::TTrack* track = &mpSubBgmSound->getSeqParameter()->field_0x1360;
+            JASystem::TTrack* track = mpSubBgmSound->getSeqParameter()->getRootTrackPointer();
             if (track) {
                 track->writePortApp(0x000b0000, 1);
             }
@@ -463,7 +463,7 @@ bool JAIZelBasic::checkBgmPlaying() {
 /* 802A59D8-802A59F4       .text checkPlayingMainBgmFlag__11JAIZelBasicFv */
 int JAIZelBasic::checkPlayingMainBgmFlag() {
     if (mpMainBgmSound) {
-        return mpMainBgmSound->field_0xc;
+        return mpMainBgmSound->mSoundID;
     } else {
         return -1;
     }
@@ -481,7 +481,7 @@ BOOL JAIZelBasic::checkSubBgmPlaying() {
 /* 802A5A04-802A5A20       .text checkPlayingSubBgmFlag__11JAIZelBasicFv */
 int JAIZelBasic::checkPlayingSubBgmFlag() {
     if (mpSubBgmSound) {
-        return mpSubBgmSound->field_0xc;
+        return mpSubBgmSound->mSoundID;
     } else {
         return -1;
     }
@@ -493,7 +493,7 @@ int JAIZelBasic::checkPlayingStreamBgmFlag() {
     if (temp->field_0x14 == NULL) {
         return -1;
     } else {
-        return temp->field_0x14->field_0xc;
+        return temp->field_0x14->mSoundID;
     }
 }
 
@@ -507,7 +507,7 @@ void JAIZelBasic::changeBgmStatus(s32 param_0) {
 /* 802A5A78-802A5AC0       .text changeSubBgmStatus__11JAIZelBasicFl */
 void JAIZelBasic::changeSubBgmStatus(s32 param_1) {
     if (mpSubBgmSound) {
-        JASystem::TTrack* track = &mpSubBgmSound->getSeqParameter()->field_0x1360;
+        JASystem::TTrack* track = mpSubBgmSound->getSeqParameter()->getRootTrackPointer();
         track->writePortApp(0x00090000, param_1);
     }
 }
diff --git a/src/JSystem/JAudio/JAISequenceMgr.cpp b/src/JSystem/JAudio/JAISequenceMgr.cpp
index 8cf9f9ca1..509ff6c80 100644
--- a/src/JSystem/JAudio/JAISequenceMgr.cpp
+++ b/src/JSystem/JAudio/JAISequenceMgr.cpp
@@ -42,12 +42,12 @@ void JAInter::SequenceMgr::init() {
     for (int i = 0; i < JAIGlobalParameter::getParamSeqPlayTrackMax(); i++) {
         FixSeqBufPointer[i] = 0;
         SeqUpdateData* update = &seqTrackInfo[i];
-        update->field_0xc = 1.0f;
-        update->field_0x18 = 0.5f;
-        update->field_0x10 = 1.0f;
-        update->field_0x14 = 0.0f;
-        update->field_0x1c = 0.0f;
-        update->field_0x20 = 1.0f;
+        update->mSeqVolume = 1.0f;
+        update->mSeqPitch = 0.5f;
+        update->mSeqFxmix = 1.0f;
+        update->mSeqPan = 0.0f;
+        update->mSeqDolby = 0.0f;
+        update->mSeqTempo = 1.0f;
         for (int j = 0; j < JAIGlobalParameter::getParamSeqTrackMax(); j++) {
             update->trackVolume[j] = 1.0f;
             update->trackPan[j] = 64.0f;
@@ -200,8 +200,3 @@ JAInter::MuteBit::MuteBit() {
     flag1 = 0;
     flag3 = 0;
 }
-
-/* 80298334-8029859C       .text init__Q27JAInter12SeqParameterFv */
-int JAInter::SeqParameter::init() {
-    /* Nonmatching */
-}
diff --git a/src/JSystem/JAudio/JAISound.cpp b/src/JSystem/JAudio/JAISound.cpp
index 33245bb48..6cf99f110 100644
--- a/src/JSystem/JAudio/JAISound.cpp
+++ b/src/JSystem/JAudio/JAISound.cpp
@@ -22,7 +22,7 @@ JAISound::JAISound() {
 
 /* 802985C4-802985E8       .text getSeCategoryNumber__8JAISoundFv */
 u8 JAISound::getSeCategoryNumber() {
-    return JAInter::SeMgr::changeIDToCategory(this->field_0xc);
+    return JAInter::SeMgr::changeIDToCategory(this->mSoundID);
 }
 
 /* 802985E8-802985F4       .text getSwBit__8JAISoundFv */
@@ -61,7 +61,7 @@ void JAISound::stop(u32 param_1) {
 
 /* 802986B8-8029878C       .text setVolume__8JAISoundFfUlUc */
 void JAISound::setVolume(f32 param_1, u32 param_2, u8 param_3) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqInterVolume(param_3, param_1, param_2);
         break;
@@ -82,7 +82,7 @@ static void dummy1() {
 
 /* 8029878C-80298864       .text setPan__8JAISoundFfUlUc */
 void JAISound::setPan(f32 param_1, u32 param_2, u8 param_3) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqInterPan(param_3, param_1, param_2);
         break;
@@ -103,7 +103,7 @@ static void dummy2() {
 
 /* 80298864-8029893C       .text setPitch__8JAISoundFfUlUc */
 void JAISound::setPitch(f32 param_1, u32 param_2, u8 param_3) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqInterPitch(param_3, param_1, param_2);
         break;
@@ -124,7 +124,7 @@ static void dummy3() {
 
 /* 8029893C-80298A04       .text setFxmix__8JAISoundFfUlUc */
 void JAISound::setFxmix(f32 param_1, u32 param_2, u8 param_3) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqInterFxmix(param_3, param_1, param_2);
         break;
@@ -144,7 +144,7 @@ static void dummy4() {
 
 /* 80298A04-80298ACC       .text setDolby__8JAISoundFfUlUc */
 void JAISound::setDolby(f32 param_1, u32 param_2, u8 param_3) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqInterDolby(param_3, param_1, param_2);
         break;
@@ -164,7 +164,7 @@ static void dummy5() {
 
 /* 80298ACC-80298B74       .text setTempoProportion__8JAISoundFfUl */
 void JAISound::setTempoProportion(f32 param_1, u32 param_2) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqTempoProportion(param_1, param_2);
         break;
@@ -179,7 +179,7 @@ void JAISound::setTempoProportion(f32 param_1, u32 param_2) {
 
 /* 80298B74-80298C28       .text setPortData__8JAISoundFUcUs */
 void JAISound::setPortData(u8 param_1, u16 param_2) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqPortData(param_1, param_2, 0);
         break;
@@ -195,7 +195,7 @@ void JAISound::setPortData(u8 param_1, u16 param_2) {
 
 /* 80298C28-80298CD8       .text setPrepareFlag__8JAISoundFUc */
 void JAISound::setPrepareFlag(u8 param_1) {
-    switch(field_0xc & 0xc0000000) {
+    switch(mSoundID & 0xc0000000) {
     case 0x80000000:
         setSeqPrepareFlag(param_1);
         break;
@@ -259,13 +259,13 @@ f32 JAISound::setPositionDopplarCommon(u32) {
 
 /* 80299178-8029925C       .text setSeqInterVolume__8JAISoundFUcfUl */
 void JAISound::setSeqInterVolume(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
         return;
     }
-    int r31 = getSeqParameter()->field_0x110[line_].set(param_2, param_3);
+    int r31 = getSeqParameter()->mVolumes[line_].set(param_2, param_3);
     if (r31 == 1) {
         getSeqParameter()->field_0x126c |= 1 << line_;
     }
@@ -280,7 +280,7 @@ static void dummy6() {
 
 /* 8029925C-802993AC       .text setSeqInterPan__8JAISoundFUcfUl */
 void JAISound::setSeqInterPan(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -298,7 +298,7 @@ void JAISound::setSeqInterPan(u8 line_, f32 param_2, u32 param_3) {
 
 /* 802993AC-802994FC       .text setSeqInterPitch__8JAISoundFUcfUl */
 void JAISound::setSeqInterPitch(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -316,7 +316,7 @@ void JAISound::setSeqInterPitch(u8 line_, f32 param_2, u32 param_3) {
 
 /* 802994FC-8029964C       .text setSeqInterFxmix__8JAISoundFUcfUl */
 void JAISound::setSeqInterFxmix(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -334,7 +334,7 @@ void JAISound::setSeqInterFxmix(u8 line_, f32 param_2, u32 param_3) {
 
 /* 8029964C-802997E4       .text setSeqInterDolby__8JAISoundFUcfUl */
 void JAISound::setSeqInterDolby(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -342,7 +342,7 @@ void JAISound::setSeqInterDolby(u8 line_, f32 param_2, u32 param_3) {
     }
     JUT_ASSERT_MSG(714, line_<JAIGlobalParameter::seqParameterLines, "JAISound::setSeqInterPan 設定できるライン数を超えています。\n");
     if (JAIBasic::getInterface()->field_0xd != 2) {
-        if (getSeqParameter()->seqDolby[line_].field_0x4 != 0.0f) {
+        if (getSeqParameter()->seqDolby[line_].mCurrentValue != 0.0f) {
             param_2 = 0.0f;
         } else {
             return;
@@ -359,13 +359,13 @@ void JAISound::setSeqInterDolby(u8 line_, f32 param_2, u32 param_3) {
 
 /* 802997E4-80299884       .text setSeqTempoProportion__8JAISoundFfUl */
 void JAISound::setSeqTempoProportion(f32 param_1, u32 param_2) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
         return;
     }
-    getSeqParameter()->field_0x0.set(param_1, param_2);
+    getSeqParameter()->mTempo.set(param_1, param_2);
     if (getSeqParameter()->field_0x135c) {
         getSeqParameter()->field_0x135c->field_0x8 |= 4;
     }
@@ -374,17 +374,17 @@ void JAISound::setSeqTempoProportion(f32 param_1, u32 param_2) {
 /* 80299884-802999F4       .text setSeqPortData__8JAISoundFUcUsUl */
 void JAISound::setSeqPortData(u8 line_, u16 param_2, u32 param_3) {
     /* Nonmatching */
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
         return;
     }
-    if (getSeqParameter()->field_0x10[line_].field_0x4 == 0.0f && field_0x5 >= 3) {
+    if (getSeqParameter()->field_0x10[line_].mCurrentValue == 0.0f && field_0x5 >= 3) {
         u16 local_38;
-        JASystem::TTrack* track = &getSeqParameter()->field_0x1360;
+        JASystem::TTrack* track = getSeqParameter()->getRootTrackPointer();
         track->readPortApp(line_ << 16, &local_38);
-        getSeqParameter()->field_0x10[line_].field_0x4 = local_38;
+        getSeqParameter()->field_0x10[line_].mCurrentValue = local_38;
     }
     int r29 = getSeqParameter()->field_0x10[line_].set(param_2, param_3);
     if (r29 == 1) {
@@ -397,7 +397,7 @@ void JAISound::setSeqPortData(u8 line_, u16 param_2, u32 param_3) {
 
 /* 802999F4-80299B14       .text setTrackVolume__8JAISoundFUcfUl */
 void JAISound::setTrackVolume(u8 line_, f32 param_2, u32 param_3) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -409,7 +409,7 @@ void JAISound::setTrackVolume(u8 line_, f32 param_2, u32 param_3) {
     if (param_3 == 0) {
         param_3++;
     }
-    int r30 = getSeqParameter()->field_0x260[line_].set(param_2, param_3);
+    int r30 = getSeqParameter()->mTrackVolumes[line_].set(param_2, param_3);
     if (r30 == 1) {
         getSeqParameter()->field_0x1280 |= 1 << line_;
     }
@@ -420,7 +420,7 @@ void JAISound::setTrackVolume(u8 line_, f32 param_2, u32 param_3) {
 
 /* 80299B14-80299BAC       .text setTrackInterruptSwitch__8JAISoundFUcUc */
 void JAISound::setTrackInterruptSwitch(u8 param_1, u8 param_2) {
-    if ((field_0xc & 0xC0000000) != 0x80000000) {
+    if ((mSoundID & 0xC0000000) != 0x80000000) {
         return;
     }
     if (!getSeqParameter()) {
@@ -533,7 +533,7 @@ void JAISound::setStreamPrepareFlag(u8) {
 /* 8029AA84-8029ACF0       .text setPauseMode__8JAISoundFUcUc */
 void JAISound::setPauseMode(u8 param_1, u8 param_2) {
     /* Nonmatching */
-    switch (field_0xc & 0xC0000000) {
+    switch (mSoundID & 0xC0000000) {
     case 0x80000000:
         if (!getSeqParameter()) {
             return;
@@ -547,7 +547,7 @@ void JAISound::setPauseMode(u8 param_1, u8 param_2) {
                 setSeqInterVolume(11, param_2 / 127.0f, 1);
                 break;
             case 2:
-                JASystem::TTrack* track = &getSeqParameter()->field_0x1360;
+                JASystem::TTrack* track = getSeqParameter()->getRootTrackPointer();
                 track->pause(true, true);
                 break;
             }
@@ -558,7 +558,7 @@ void JAISound::setPauseMode(u8 param_1, u8 param_2) {
                 setSeqInterVolume(11, 1.0f, 1);
                 break;
             case 2:
-                JASystem::TTrack* track = &getSeqParameter()->field_0x1360;
+                JASystem::TTrack* track = getSeqParameter()->getRootTrackPointer();
                 track->pause(false, true);
                 break;
             }
diff --git a/src/JSystem/JAudio/JAISystemInterface.cpp b/src/JSystem/JAudio/JAISystemInterface.cpp
index 8e013ec32..0ad4cd46a 100644
--- a/src/JSystem/JAudio/JAISystemInterface.cpp
+++ b/src/JSystem/JAudio/JAISystemInterface.cpp
@@ -5,6 +5,8 @@
 
 #include "JSystem/JAudio/JAISystemInterface.h"
 #include "JSystem/JAudio/JASTrack.h"
+#include "JSystem/JAudio/JAISequenceMgr.h"
+#include "JSystem/JAudio/JAIGlobalParameter.h"
 #include "dolphin/dvd/dvd.h"
 
 JASystem::Kernel::TPortCmd JAInter::SystemInterface::systemPortCmd;
@@ -33,41 +35,130 @@ int JAInter::SystemInterface::checkSeqActiveFlag(JASystem::TTrack* param_1) {
 }
 
 /* 8029E2A0-8029E478       .text trackToSeqp__Q27JAInter15SystemInterfaceFP8JAISoundUc */
-void JAInter::SystemInterface::trackToSeqp(JAISound*, u8) {
-    /* Nonmatching */
+JASystem::TTrack* JAInter::SystemInterface::trackToSeqp(JAISound* seq, u8 trackNo) {
+    JASystem::TTrack* result = NULL;
+    if (!IsJAISoundIDInUse(seq->mSoundID)) {
+        JASystem::TTrack* rootTrack = seq->getSeqParameter()->getRootTrackPointer();
+        JASystem::TTrack* childTrack = rootTrack->getChild(trackNo >> 4);
+        if (childTrack != NULL) {
+            result = childTrack->getChild(trackNo & 0xF);
+        }
+    } else {
+        result = seq->getSeqParameter()->getRootTrackPointer()->getChild(trackNo & 0xF);
+    }
+    return result;
 }
 
 /* 8029E478-8029E494       .text setSeqPortargsF32__Q27JAInter15SystemInterfaceFPQ27JAInter13SeqUpdateDataUlUcf */
-void JAInter::SystemInterface::setSeqPortargsF32(JAInter::SeqUpdateData*, u32, u8, f32) {
-    /* Nonmatching */
+void JAInter::SystemInterface::setSeqPortargsF32(JAInter::SeqUpdateData* updateData, u32 playerParameterIndex, u8 portArgIndex, f32 value) {
+    updateData->systemTrackParameter[playerParameterIndex].mPortArgs.asArray[portArgIndex].f32 = value;
 }
 
 /* 8029E494-8029E4B0       .text setSeqPortargsU32__Q27JAInter15SystemInterfaceFPQ27JAInter13SeqUpdateDataUlUcUl */
-void JAInter::SystemInterface::setSeqPortargsU32(JAInter::SeqUpdateData*, u32, u8, u32) {
-    /* Nonmatching */
+void JAInter::SystemInterface::setSeqPortargsU32(JAInter::SeqUpdateData* updateData, u32 playerParameterIndex, u8 portArgIndex, u32 value) {
+    updateData->systemTrackParameter[playerParameterIndex].mPortArgs.asArray[portArgIndex].u32 = value;
 }
 
 /* 8029E4B0-8029E518       .text rootInit__Q27JAInter15SystemInterfaceFPQ27JAInter13SeqUpdateData */
-void JAInter::SystemInterface::rootInit(JAInter::SeqUpdateData*) {
-    /* Nonmatching */
+void JAInter::SystemInterface::rootInit(JAInter::SeqUpdateData* updateData) {
+    JAISound* r30 = updateData->field_0x48;
+    JASystem::TTrack* track = r30->getSeqParameter()->getRootTrackPointer();
+    outerInit(updateData, track, JAIGlobalParameter::getParamSeqTrackMax(), 0xFFFF, 0);
+    r30->getSeqParameter();
 }
 
 /* 8029E518-8029E5B4       .text trackInit__Q27JAInter15SystemInterfaceFPQ27JAInter13SeqUpdateData */
-void JAInter::SystemInterface::trackInit(JAInter::SeqUpdateData*) {
-    /* Nonmatching */
+void JAInter::SystemInterface::trackInit(JAInter::SeqUpdateData* updateData) {
+    JAISound* seq = updateData->field_0x48;
+    u32 max = 16;
+    if (!IsJAISoundIDInUse(seq->mSoundID)) {
+        max = JAIGlobalParameter::getParamSeqTrackMax();
+    }
+    for (u32 i = 0; i < max; i++) {
+        if ((updateData->field_0x4 & 1 << i) == 0) {
+            outerInit(updateData, trackToSeqp(seq, i), i, 0xFFFF, 0);
+        }
+    }
 }
 
 /* 8029E5B4-8029E7B8       .text outerInit__Q27JAInter15SystemInterfaceFPQ27JAInter13SeqUpdateDataPvUlUsUc */
-void JAInter::SystemInterface::outerInit(JAInter::SeqUpdateData*, void*, u32, u16, u8) {
-    /* Nonmatching */
+void JAInter::SystemInterface::outerInit(JAInter::SeqUpdateData* updateData, void* track, u32 trackNo, u16 paramFlags, u8 p5) {
+    if (track == NULL) {
+        return;
+    }
+    JASystem::Kernel::TPortArgs* portArgs = &updateData->systemTrackParameter[trackNo].mPortArgs.asStruct;
+    JASystem::TTrack* seqP = (JASystem::TTrack*)track;
+    updateData->systemTrackParameter[trackNo].mTrack = seqP;
+    portArgs->mTrack = (JASystem::TTrack*)track;
+    updateData->systemTrackParameter[trackNo].mCommand.setPortCmd(setSePortParameter, portArgs);
+    JASystem::TTrack::TOuterParam* outerParam = seqP->getOuterParam();
+    if (trackNo == JAIGlobalParameter::getParamSeqTrackMax()) {
+        portArgs->mTrackVolume = updateData->mSeqVolume;
+        portArgs->mTrackPitch  = updateData->mSeqPitch;
+        portArgs->mTrackFxmix  = updateData->mSeqFxmix;
+        portArgs->mTrackPan    = updateData->mSeqPan;
+        portArgs->mTrackDolby  = updateData->mSeqDolby;
+        portArgs->mTrackTempo  = updateData->mSeqTempo;
+        portArgs->mFlags       = 0xFF;
+        outerParam->onSwitch(OUTERPARAM_Tempo);
+    } else {
+        JAInter::SeqParameter* seqParam = updateData->field_0x48->getSeqParameter();
+        portArgs->mTrackVolume = seqParam->mTrackVolumes[trackNo].mCurrentValue;
+        portArgs->mTrackPitch  = seqParam->mTrackPitches[trackNo].mCurrentValue;
+        portArgs->mTrackFxmix  = seqParam->mTrackFxmixes[trackNo].mCurrentValue;
+        portArgs->mTrackPan    = seqParam->mTrackPans[trackNo].mCurrentValue;
+        portArgs->mTrackDolby  = seqParam->mTrackDolbys[trackNo].mCurrentValue;
+        portArgs->_20          = 0;
+        portArgs->mFlags       = 0x7F;
+        seqP->muteTrack(seqParam->mMuteBits[trackNo].flag1);
+    }
+
+    outerParam->onSwitch(OUTERPARAM_Volume);
+    outerParam->onSwitch(OUTERPARAM_Pitch);
+    outerParam->onSwitch(OUTERPARAM_Fxmix);
+    outerParam->onSwitch(OUTERPARAM_Pan);
+    outerParam->onSwitch(OUTERPARAM_Dolby);
+    if (!(paramFlags & OUTERPARAM_Volume)) {
+        outerParam->setParam(OUTERPARAM_Volume, 0.0f);
+    }
+    if (!(paramFlags & OUTERPARAM_Pitch)) {
+        outerParam->setParam(OUTERPARAM_Pitch, 0.0f);
+    }
+    if (!(paramFlags & OUTERPARAM_Fxmix)) {
+        outerParam->setParam(OUTERPARAM_Fxmix, 0.0f);
+    }
+    if (!(paramFlags & OUTERPARAM_Pan)) {
+        outerParam->setParam(OUTERPARAM_Pan, 0.0f);
+    }
+    if (!(paramFlags & OUTERPARAM_Dolby)) {
+        outerParam->setParam(OUTERPARAM_Dolby, 0.0f);
+    }
+    updateData->systemTrackParameter[trackNo].mCommand.addPortCmdOnce();
 }
 
 /* 8029E7B8-8029E820       .text setPortParameter__Q27JAInter15SystemInterfaceFPQ38JASystem6Kernel9TPortArgsPQ28JASystem6TTrackUlUl */
-void JAInter::SystemInterface::setPortParameter(JASystem::Kernel::TPortArgs*, JASystem::TTrack*, u32, u32) {
-    /* Nonmatching */
+void JAInter::SystemInterface::setPortParameter(JASystem::Kernel::TPortArgs* args, JASystem::TTrack* seqP, u32 r5, u32 paramFlag) {
+    u32 r31 = 1 << (r5 - 2);
+    if ((args->mFlags & r31) != 0) {
+        f32 f1 = ((f32*)&args->mTrackVolume)[r5 - 2];
+        seqP->getOuterParam()->setParam(paramFlag, f1);
+        args->mFlags = args->mFlags ^ r31;
+    }
 }
 
 /* 8029E820-8029E8F4       .text setSePortParameter__Q27JAInter15SystemInterfaceFPQ38JASystem6Kernel9TPortArgs */
-void JAInter::SystemInterface::setSePortParameter(JASystem::Kernel::TPortArgs*) {
-    /* Nonmatching */
+void JAInter::SystemInterface::setSePortParameter(JASystem::Kernel::TPortArgs* args) {
+    JASystem::TTrack* track = args->mTrack;
+    if (track == NULL) {
+        return;
+    }
+    setPortParameter(args, track, 0x02, OUTERPARAM_Volume);
+    setPortParameter(args, track, 0x03, OUTERPARAM_Pitch);
+    setPortParameter(args, track, 0x04, OUTERPARAM_Pan);
+    setPortParameter(args, track, 0x05, OUTERPARAM_Fxmix);
+    setPortParameter(args, track, 0x09, OUTERPARAM_Tempo);
+    setPortParameter(args, track, 0x06, OUTERPARAM_Dolby);
+    if ((args->mFlags & 0x40) != 0 && args->_20 != 0) {
+        track->setInterrupt(5);
+    }
 }
diff --git a/src/JSystem/JAudio/JASSeqParser.cpp b/src/JSystem/JAudio/JASSeqParser.cpp
index 7e4280bdb..39419367d 100644
--- a/src/JSystem/JAudio/JASSeqParser.cpp
+++ b/src/JSystem/JAudio/JASSeqParser.cpp
@@ -202,7 +202,7 @@ int JASystem::TSeqParser::cmdCloseTrack(TTrack* track, u32* params) {
 
 /* 8027EFD8-8027F02C       .text cmdOutSwitch__Q28JASystem10TSeqParserFPQ28JASystem6TTrackPUl */
 int JASystem::TSeqParser::cmdOutSwitch(TTrack* track, u32* params) {
-    TTrack::TOuterParam* outer = track->field_0x360;
+    TTrack::TOuterParam* outer = track->getOuterParam();
     if (outer) {
         outer->setOuterSwitch(params[0]);
         outer->setOuterUpdate(0xffff);
diff --git a/src/JSystem/JAudio/JASTrack.cpp b/src/JSystem/JAudio/JASTrack.cpp
index 4ce8e3844..6e264cc8d 100644
--- a/src/JSystem/JAudio/JASTrack.cpp
+++ b/src/JSystem/JAudio/JASTrack.cpp
@@ -61,8 +61,8 @@ void JASystem::TTrack::init() {
     for (int i = 0; i < 16; i++) {
         mChildren[i] = NULL;
     }
-    if (field_0x360) {
-        field_0x360->initExtBuffer();
+    if (mOuterParam) {
+        mOuterParam->initExtBuffer();
     }
     field_0x364 = 0.0f;
     field_0x368 = 1.0f;
@@ -183,7 +183,7 @@ bool JASystem::TTrack::tryInterrupt() {
 
 /* 80281004-8028100C       .text assignExtBuffer__Q28JASystem6TTrackFPQ38JASystem6TTrack11TOuterParam */
 void JASystem::TTrack::assignExtBuffer(TOuterParam* param_1) {
-    field_0x360 = param_1;
+    mOuterParam = param_1;
 }
 
 /* 8028100C-80281050       .text releaseChannelAll__Q28JASystem6TTrackFv */