diff --git a/configure.py b/configure.py
index 41d6373d0..285e9ed5e 100644
--- a/configure.py
+++ b/configure.py
@@ -665,7 +665,7 @@ config.libs = [
             Object(NonMatching, "JSystem/JAudio/JASNoteMgr.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASOuterParam.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASPlayer_impl.cpp"),
-            Object(NonMatching, "JSystem/JAudio/JASRegisterParam.cpp"),
+            Object(Matching,    "JSystem/JAudio/JASRegisterParam.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASSeqCtrl.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASSeqParser.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASTrack.cpp"),
diff --git a/include/JSystem/JAudio/JASRegisterParam.h b/include/JSystem/JAudio/JASRegisterParam.h
new file mode 100644
index 000000000..5f3b6378d
--- /dev/null
+++ b/include/JSystem/JAudio/JASRegisterParam.h
@@ -0,0 +1,33 @@
+#ifndef JASREGISTERPARAM_H
+#define JASREGISTERPARAM_H
+
+#include "dolphin/types.h"
+
+namespace JASystem {
+    class TRegisterParam {
+    public:
+        TRegisterParam();
+        void init();
+        void inherit(const TRegisterParam&);
+        u8 getBankNumber() const;
+        u8 getProgramNumber() const;
+
+        /* 0x00 */ short field_0x0;
+        /* 0x02 */ short field_0x2;
+        /* 0x04 */ short field_0x4;
+        /* 0x06 */ short field_0x6;
+        /* 0x08 */ short field_0x8;
+        /* 0x0A */ short field_0xa;
+        /* 0x0C */ u16 field_0xc;
+        /* 0x0E */ u16 field_0xe;
+        /* 0x10 */ u16 field_0x10[5];
+        /* 0x1A */ u16 field_0x1a;
+        /* 0x1C */ int field_0x1c;
+        /* 0x20 */ int field_0x20;
+        /* 0x24 */ int field_0x24;
+        /* 0x28 */ int field_0x28;
+        /* 0x2C */ int field_0x2c;
+    };
+}
+
+#endif /* JASREGISTERPARAM_H */
diff --git a/src/JSystem/JAudio/JASRegisterParam.cpp b/src/JSystem/JAudio/JASRegisterParam.cpp
index 3523d59a1..7bff29b3a 100644
--- a/src/JSystem/JAudio/JASRegisterParam.cpp
+++ b/src/JSystem/JAudio/JASRegisterParam.cpp
@@ -3,31 +3,79 @@
 // Translation Unit: JASRegisterParam.cpp
 //
 
-#include "JASRegisterParam.h"
+#include "JSystem/JAudio/JASRegisterParam.h"
 #include "dolphin/types.h"
 
 /* 8027E2C0-8027E310       .text __ct__Q28JASystem14TRegisterParamFv */
 JASystem::TRegisterParam::TRegisterParam() {
-    /* Nonmatching */
+    field_0x0 = 0;
+    field_0x2 = 0;
+    field_0x4 = 0;
+    field_0x6 = 0;
+    field_0x8 = 0;
+    field_0xa = 0;
+    field_0xc = 0;
+    field_0xe = 0;
+    field_0x1a = 0;
+    field_0x10[0] = 0;
+    field_0x10[1] = 0;
+    field_0x10[2] = 0;
+    field_0x10[3] = 0;
+    field_0x10[4] = 0;
+    field_0x20 = 0;
+    field_0x24 = 0;
+    field_0x28 = 0;
+    field_0x2c = 0;
 }
 
 /* 8027E310-8027E378       .text init__Q28JASystem14TRegisterParamFv */
 void JASystem::TRegisterParam::init() {
-    /* Nonmatching */
+    field_0x0 = 0;
+    field_0x2 = 0;
+    field_0x4 = 0;
+    field_0x6 = 0;
+    field_0x8 = 0;
+    field_0xa = 0;
+    field_0xc = 0xf0;
+    field_0xe = 0x0c;
+    field_0x1a = 0x40;
+    field_0x10[0] = 0;
+    field_0x10[1] = 1;
+    field_0x10[2] = 1;
+    field_0x10[3] = 0x7fff;
+    field_0x10[4] = 0x4000;
+    field_0x20 = 0;
+    field_0x24 = 0;
+    field_0x28 = 0;
+    field_0x2c = 0;
 }
 
 /* 8027E378-8027E3E0       .text inherit__Q28JASystem14TRegisterParamFRCQ28JASystem14TRegisterParam */
-void JASystem::TRegisterParam::inherit(const JASystem::TRegisterParam&) {
-    /* Nonmatching */
+void JASystem::TRegisterParam::inherit(const JASystem::TRegisterParam& param_1) {
+    field_0x0 = 0;
+    field_0x2 = 0;
+    field_0x4 = 0;
+    field_0x6 = 0;
+    field_0x8 = 0;
+    field_0xa = 0;
+    field_0xc = param_1.field_0xc;
+    field_0xe = param_1.field_0xe;
+    field_0x1a = param_1.field_0x1a;
+    for (int i = 0; i < 5; i++) {
+        field_0x10[i] = param_1.field_0x10[i];
+    }
+    field_0x20 = 0;
+    field_0x24 = 0;
+    field_0x28 = 0;
+    field_0x2c = 0;
 }
 
 /* 8027E3E0-8027E3EC       .text getBankNumber__Q28JASystem14TRegisterParamCFv */
-void JASystem::TRegisterParam::getBankNumber() const {
-    /* Nonmatching */
+u8 JASystem::TRegisterParam::getBankNumber() const {
+    return field_0xc >> 8 & 0xff;
 }
 
 /* 8027E3EC-8027E3F8       .text getProgramNumber__Q28JASystem14TRegisterParamCFv */
-void JASystem::TRegisterParam::getProgramNumber() const {
-    /* Nonmatching */
+u8 JASystem::TRegisterParam::getProgramNumber() const {
+    return field_0xc & 0xff;
 }
-