diff --git a/include/JAZelAudio/JAIZelBasic.h b/include/JAZelAudio/JAIZelBasic.h
index 6b3062fd0..125464d33 100644
--- a/include/JAZelAudio/JAIZelBasic.h
+++ b/include/JAZelAudio/JAIZelBasic.h
@@ -38,11 +38,11 @@ public:
     void onEnemyDamage();
     void mbossBgmMuteProcess();
     void mbossBgmNearByProcess(f32);
-    void checkBgmPlaying();
-    void checkPlayingMainBgmFlag();
-    void checkSubBgmPlaying();
-    void checkPlayingSubBgmFlag();
-    void checkPlayingStreamBgmFlag();
+    bool checkBgmPlaying();
+    int checkPlayingMainBgmFlag();
+    bool checkSubBgmPlaying();
+    int checkPlayingSubBgmFlag();
+    int checkPlayingStreamBgmFlag();
     void changeBgmStatus(s32);
     void changeSubBgmStatus(s32);
     void bgmMuteMtDragon();
@@ -102,7 +102,7 @@ public:
     BOOL check1stDynamicWave();
     void load2ndDynamicWave();
     void loadStaticWaves();
-    BOOL checkFirstWaves();
+    s32 checkFirstWaves();
     void setLinkHp(s32, s32);
     void setLinkSwordType(s32, s32);
     void setLinkShieldType(s32, s32);
@@ -145,8 +145,8 @@ public:
     void rainPlay(s32);
 
     virtual JAISound* makeSound(u32);
-    virtual bool getMapInfoFxline(u32);
-    virtual bool getMapInfoGround(u32);
+    virtual BOOL getMapInfoFxline(u32);
+    virtual BOOL getMapInfoGround(u32);
     virtual f32 getMapInfoFxParameter(u32);
 
     void setHour(s32 i_hour) { mHour = i_hour; }
@@ -155,6 +155,18 @@ public:
 
     static JAIZelBasic* getInterface() { return zel_basic; }
 
+    // TODO
+    void bstHoriOff() {}
+    void bstHoriOn() {}
+    void calcMainBgmVol() {}
+    void calcSubBgmVol() {}
+    void checkSeMute() {}
+    void checkTBoxDemo() {}
+    void getCurCamera(u32) {}
+    void getLinkBootsType() {}
+    void getLinkSwShieldBeat() {}
+    void isTaktUsing() {}
+
     static JAIZelBasic* zel_basic;
 
     // static m_bgm_mute_state;
@@ -199,10 +211,13 @@ public:
     /* 0x0061 */ u8 field_0x0061;
     /* 0x0062 */ u8 field_0x0062;
     /* 0x0063 */ u8 field_0x0063;
-    /* 0x0064 */ u8 field_0x0064[0x0066 - 0x0064];
+    /* 0x0064 */ u8 field_0x0064[0x0065 - 0x0064];
+    /* 0x0065 */ u8 field_0x0065;
     /* 0x0066 */ u8 field_0x0066;
-    /* 0x0067 */ u8 field_0x0067[0x0070 - 0x0067];
-    /* 0x0070 */ JAISound* mpSound;
+    /* 0x0067 */ u8 field_0x0067[0x0068 - 0x0067];
+    /* 0x0068 */ JAISound* mpMainBgmSound;
+    /* 0x006C */ JAISound* mpSubBgmSound;
+    /* 0x0070 */ JAISound* mpStreamBgmSound;
     /* 0x0074 */ int field_0x0074;
     /* 0x0078 */ u32 field_0x0078;
     /* 0x007C */ u32 field_0x007c;
diff --git a/include/JSystem/JAudio/JAIBankWave.h b/include/JSystem/JAudio/JAIBankWave.h
index e79b170a0..1fe60019c 100644
--- a/include/JSystem/JAudio/JAIBankWave.h
+++ b/include/JSystem/JAudio/JAIBankWave.h
@@ -14,7 +14,7 @@ namespace JAInter {
         void finishSceneSet(u32);
         void loadSceneWave(s32, s32);
         void loadGroupWave(s32, s32);
-        void getWaveLoadStatus(s32);
+        s32 getWaveLoadStatus(s32);
         bool checkAllWaveLoadStatus();
 
         extern s32* wsGroupNumber;
diff --git a/include/JSystem/JAudio/JAIBasic.h b/include/JSystem/JAudio/JAIBasic.h
index f7ea36301..f55a37a7f 100644
--- a/include/JSystem/JAudio/JAIBasic.h
+++ b/include/JSystem/JAudio/JAIBasic.h
@@ -19,8 +19,8 @@ class JAIBasic {
 public:
     JAIBasic();
     virtual JAISound* makeSound(u32);
-    virtual bool getMapInfoFxline(u32);
-    virtual bool getMapInfoGround(u32);
+    virtual BOOL getMapInfoFxline(u32);
+    virtual BOOL getMapInfoGround(u32);
     virtual f32 getMapInfoFxParameter(u32);
     virtual void setSeExtParameter(JAISound*);
     virtual void setRegisterTrackCallback();
@@ -81,6 +81,22 @@ public:
         return msCurrentHeap;
     }
 
+    // TODO
+    void addInitOnCodeSeScene(u32, u32) {}
+    void checkAllWaveLoadStatus() {}
+    void checkEnablePrepare(u32) {}
+    void getAudioCamera() {}
+    void getInitDataInfo() {}
+    void getInitOnCodeSeScene() {}
+    void getSceneSetFlag() {}
+    void getSeSoundHandle() {}
+    void getWaveLoadStatus(s32) {}
+    void initAudio(JKRSolidHeap*, u32, u8) {}
+    void loadSceneWave(s32, s32) {}
+    void prepareSoundVec(u32, JAISound**, Vec*, u32, u32, u8) {}
+    void setInitDataInfo(char*) {}
+    void setInitOnCodeSeScene(u32*) {}
+
     static JAIBasic* msBasic;
     static JKRSolidHeap* msCurrentHeap;
 };
diff --git a/include/JSystem/JAudio/JAISound.h b/include/JSystem/JAudio/JAISound.h
index ef71c5002..7c5ff1867 100644
--- a/include/JSystem/JAudio/JAISound.h
+++ b/include/JSystem/JAudio/JAISound.h
@@ -72,6 +72,46 @@ public:
     int checkSoundHandle(u32, void*);
     void initParameter(JAISound**, JAInter::Actor*, u32, u32, u8, void*);
 
+    // TODO
+    void decWait() {}
+    void getAct() {}
+    void getAdjustPriority() {}
+    void getFadetime() {}
+    void getID() {}
+    void getInfoPointer() {}
+    void getMapInfo() {}
+    void getNextSound() {}
+    void getPlayGameFrameCounter() {}
+    void getPlayer() {}
+    void getPositionInfo() {}
+    void getPrevSound() {}
+    void getPriority() {}
+    void getStatus() {}
+    void getTrack() {}
+    void getTrans() {}
+    void getWait() {}
+    void incPlayGameFrameCounter() {}
+    void setCustomParameterPointer(void*) {}
+    void setDemoFxmix(f32, u32) {}
+    void setDemoPan(f32, u32) {}
+    void setDemoPitch(f32, u32) {}
+    void setDemoVolume(f32, u32) {}
+    void setFadetime(u32) {}
+    void setID(u32) {}
+    void setMainSoundPPointer(JAISound**) {}
+    void setNextSound(JAISound*) {}
+    void setPrevSound(JAISound*) {}
+    void setPriority(u32) {}
+    void setRandom(u8) {}
+    void setSeInterDolbyU7(u8, u8, u32, u8) {}
+    void setSeInterFxmixU7(u8, u8, u32, u8) {}
+    void setSeqInterVolumeU7(u8, u8, u32) {}
+    void setStatus(u8) {}
+    void setTrack(u8) {}
+    void setTrackVolumeU7(u8, u8, u32) {}
+    void setVolumeU7(u8, u32, u8) {}
+    void setWait(u8) {}
+
     /* 0x04 */ u8 field_0x4;
     /* 0x05 */ u8 field_0x5;
     /* 0x06 */ u8 field_0x6;
diff --git a/include/JSystem/JAudio/JAIStreamMgr.h b/include/JSystem/JAudio/JAIStreamMgr.h
index 433aebe16..da5162161 100644
--- a/include/JSystem/JAudio/JAIStreamMgr.h
+++ b/include/JSystem/JAudio/JAIStreamMgr.h
@@ -28,9 +28,11 @@ namespace JAInter {
 
         extern LinkSound streamControl;
         extern u8 flags;
-        extern int streamUpdate;
+        extern int streamUpdate; // TODO pointer to something, not actually an int
         extern u8* streamList;
         extern u8* initOnCodeStrm;
+
+        inline int getUpdateInfo() { return streamUpdate; }
     }
 
     namespace StreamLib {
diff --git a/src/JAZelAudio/JAIZelBasic.cpp b/src/JAZelAudio/JAIZelBasic.cpp
index b57b72691..0f51aecff 100644
--- a/src/JAZelAudio/JAIZelBasic.cpp
+++ b/src/JAZelAudio/JAIZelBasic.cpp
@@ -4,14 +4,18 @@
 //
 
 #include "JAZelAudio/JAIZelBasic.h"
-#include "dolphin/types.h"
+#include "JSystem/JAudio/JAISound.h"
+#include "JSystem/JAudio/JAIStreamMgr.h"
+#include "JSystem/JAudio/JAIBankWave.h"
+
+JAIZelBasic* JAIZelBasic::zel_basic;
 
 /* 802A1C78-802A1EB4       .text __ct__11JAIZelBasicFv */
 JAIZelBasic::JAIZelBasic() {
     zel_basic = this;
     field_0x0021 = 0;
     field_0x0024 = 0;
-    mpSound = 0;
+    mpStreamBgmSound = NULL;
     field_0x0020 = 0;
     field_0x0074 = -1;
     field_0x0078 = -1;
@@ -180,8 +184,12 @@ void JAIZelBasic::bgmStop(u32, s32) {
 }
 
 /* 802A4770-802A47B8       .text mainBgmStopOnly__11JAIZelBasicFUl */
-void JAIZelBasic::mainBgmStopOnly(u32) {
-    /* Nonmatching */
+void JAIZelBasic::mainBgmStopOnly(u32 param_1) {
+    if (mpMainBgmSound) {
+        mpMainBgmSound->stop(param_1);
+    }
+    mpMainBgmSound = NULL;
+    field_0x0078 = -1;
 }
 
 /* 802A47B8-802A4CDC       .text subBgmStart__11JAIZelBasicFUl */
@@ -225,8 +233,8 @@ void JAIZelBasic::bgmHitSound(s32) {
 }
 
 /* 802A579C-802A57A4       .text bgmSetSwordUsing__11JAIZelBasicFl */
-void JAIZelBasic::bgmSetSwordUsing(s32) {
-    /* Nonmatching */
+void JAIZelBasic::bgmSetSwordUsing(s32 param_1) {
+    field_0x00c9 = param_1;
 }
 
 /* 802A57A4-802A5818       .text onEnemyDamage__11JAIZelBasicFv */
@@ -245,33 +253,48 @@ void JAIZelBasic::mbossBgmNearByProcess(f32) {
 }
 
 /* 802A59B0-802A59D8       .text checkBgmPlaying__11JAIZelBasicFv */
-void JAIZelBasic::checkBgmPlaying() {
-    /* Nonmatching */
+bool JAIZelBasic::checkBgmPlaying() {
+    if (mpMainBgmSound || mpStreamBgmSound) {
+        return true;
+    } else {
+        return false;
+    }
 }
 
 /* 802A59D8-802A59F4       .text checkPlayingMainBgmFlag__11JAIZelBasicFv */
-void JAIZelBasic::checkPlayingMainBgmFlag() {
-    /* Nonmatching */
+int JAIZelBasic::checkPlayingMainBgmFlag() {
+    if (mpMainBgmSound) {
+        return mpMainBgmSound->field_0xc;
+    } else {
+        return -1;
+    }
 }
 
 /* 802A59F4-802A5A04       .text checkSubBgmPlaying__11JAIZelBasicFv */
-void JAIZelBasic::checkSubBgmPlaying() {
-    /* Nonmatching */
+bool JAIZelBasic::checkSubBgmPlaying() {
+    return mpSubBgmSound != NULL;
 }
 
 /* 802A5A04-802A5A20       .text checkPlayingSubBgmFlag__11JAIZelBasicFv */
-void JAIZelBasic::checkPlayingSubBgmFlag() {
-    /* Nonmatching */
+int JAIZelBasic::checkPlayingSubBgmFlag() {
+    if (mpSubBgmSound) {
+        return mpSubBgmSound->field_0xc;
+    } else {
+        return -1;
+    }
 }
 
 /* 802A5A20-802A5A40       .text checkPlayingStreamBgmFlag__11JAIZelBasicFv */
-void JAIZelBasic::checkPlayingStreamBgmFlag() {
+int JAIZelBasic::checkPlayingStreamBgmFlag() {
     /* Nonmatching */
+    JAInter::StreamMgr::getUpdateInfo();
 }
 
 /* 802A5A40-802A5A78       .text changeBgmStatus__11JAIZelBasicFl */
-void JAIZelBasic::changeBgmStatus(s32) {
-    /* Nonmatching */
+void JAIZelBasic::changeBgmStatus(s32 param_0) {
+    if (mpMainBgmSound) {
+        mpMainBgmSound->setPortData(9, param_0);
+    }
 }
 
 /* 802A5A78-802A5AC0       .text changeSubBgmStatus__11JAIZelBasicFl */
@@ -281,7 +304,7 @@ void JAIZelBasic::changeSubBgmStatus(s32) {
 
 /* 802A5AC0-802A5ACC       .text bgmMuteMtDragon__11JAIZelBasicFv */
 void JAIZelBasic::bgmMuteMtDragon() {
-    /* Nonmatching */
+    field_0x0065 = 1;
 }
 
 /* 802A5ACC-802A5BA4       .text enemyNearBy__11JAIZelBasicFv */
@@ -341,7 +364,7 @@ void JAIZelBasic::startLandingDemo() {
 
 /* 802A6608-802A6614       .text endLandingDemo__11JAIZelBasicFv */
 void JAIZelBasic::endLandingDemo() {
-    /* Nonmatching */
+    mbLandingDemoStarted = 0;
 }
 
 /* 802A6614-802A6720       .text initSe__11JAIZelBasicFv */
@@ -435,8 +458,8 @@ void JAIZelBasic::shipCruiseSePlay(Vec*, f32) {
 }
 
 /* 802A965C-802A9664       .text setShipSailState__11JAIZelBasicFl */
-void JAIZelBasic::setShipSailState(s32) {
-    /* Nonmatching */
+void JAIZelBasic::setShipSailState(s32 isSailing) {
+    mIsSailing = isSailing;
 }
 
 /* 802A9664-802A9874       .text init__11JAIZelBasicFP12JKRSolidHeapUl */
@@ -505,8 +528,8 @@ void JAIZelBasic::setLinkGroupInfo(u8) {
 }
 
 /* 802AA378-802AA380       .text getMapInfoFxline__11JAIZelBasicFUl */
-bool JAIZelBasic::getMapInfoFxline(u32) {
-    /* Nonmatching */
+BOOL JAIZelBasic::getMapInfoFxline(u32 param_0) {
+    return param_0 & 0xFFFF;
 }
 
 /* 802AA380-802AA388       .text getMapInfoFxParameter__11JAIZelBasicFUl */
@@ -515,8 +538,8 @@ f32 JAIZelBasic::getMapInfoFxParameter(u32) {
 }
 
 /* 802AA388-802AA390       .text getMapInfoGround__11JAIZelBasicFUl */
-bool JAIZelBasic::getMapInfoGround(u32) {
-    /* Nonmatching */
+BOOL JAIZelBasic::getMapInfoGround(u32) {
+    return FALSE;
 }
 
 /* 802AA390-802AACE8       .text setScene__11JAIZelBasicFllll */
@@ -580,8 +603,8 @@ void JAIZelBasic::loadStaticWaves() {
 }
 
 /* 802AB888-802AB8B0       .text checkFirstWaves__11JAIZelBasicFv */
-BOOL JAIZelBasic::checkFirstWaves() {
-    /* Nonmatching */
+s32 JAIZelBasic::checkFirstWaves() {
+    return 2 - JAInter::BankWave::getWaveLoadStatus(2);
 }
 
 /* 802AB8B0-802AB9F4       .text setLinkHp__11JAIZelBasicFll */
diff --git a/src/JSystem/JAudio/JAIBankWave.cpp b/src/JSystem/JAudio/JAIBankWave.cpp
index fe43cb0f2..34da224a2 100644
--- a/src/JSystem/JAudio/JAIBankWave.cpp
+++ b/src/JSystem/JAudio/JAIBankWave.cpp
@@ -65,7 +65,7 @@ void JAInter::BankWave::loadGroupWave(s32, s32) {
 }
 
 /* 802916B0-802916C0       .text getWaveLoadStatus__Q27JAInter8BankWaveFl */
-void JAInter::BankWave::getWaveLoadStatus(s32) {
+s32 JAInter::BankWave::getWaveLoadStatus(s32) {
     /* Nonmatching */
 }
 
diff --git a/src/JSystem/JAudio/JAIBasic.cpp b/src/JSystem/JAudio/JAIBasic.cpp
index 28ade8cdf..ee1c53e42 100644
--- a/src/JSystem/JAudio/JAIBasic.cpp
+++ b/src/JSystem/JAudio/JAIBasic.cpp
@@ -224,13 +224,13 @@ void JAIBasic::deleteObject(void*) {
 }
 
 /* 80290D94-80290DA0       .text getMapInfoFxline__8JAIBasicFUl */
-bool JAIBasic::getMapInfoFxline(u32 param_1) {
-    return param_1 != 0;
+BOOL JAIBasic::getMapInfoFxline(u32 param_1) {
+    return param_1 ? TRUE : FALSE;
 }
 
 /* 80290DA0-80290DAC       .text getMapInfoGround__8JAIBasicFUl */
-bool JAIBasic::getMapInfoGround(u32 param_1) {
-    return param_1 != 0;
+BOOL JAIBasic::getMapInfoGround(u32 param_1) {
+    return param_1 ? TRUE : FALSE;
 }
 
 /* 80290DAC-80290DC4       .text getMapInfoFxParameter__8JAIBasicFUl */