diff --git a/include/musyx/seq.h b/include/musyx/seq.h
new file mode 100644
index 00000000..243895a9
--- /dev/null
+++ b/include/musyx/seq.h
@@ -0,0 +1,19 @@
+#include "musyx/musyx_priv.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern u16 seqMIDIPriority[8][16];
+
+void sndSeqStop(s32 unk);
+void sndSeqSpeed(s32 unk1, s32 unk2);
+void sndSeqContinue(s32 unk);
+void sndSeqMute(s32 unk1, s32 unk2, s32 unk3);
+void sndSeqVolume(s32 unk1, s32 unk2, s32 unk3, s32 unk4);
+u16 seqGetMIDIPriority(s32 unk1, s32 unk2);
+
+#ifdef __cplusplus
+}
+#endif
+ 
diff --git a/obj_files.mk b/obj_files.mk
index 4fb3d2bf..69c033a0 100644
--- a/obj_files.mk
+++ b/obj_files.mk
@@ -783,7 +783,7 @@ MSL_PPCEABI_BARE_H :=\
 MUSYX_FILES :=\
 	$(BUILD_DIR)/asm/musyx/seq.o\
 	$(BUILD_DIR)/asm/musyx/synth.o\
-	$(BUILD_DIR)/asm/musyx/seq_api.o\
+	$(BUILD_DIR)/src/musyx/seq_api.o\
 	$(BUILD_DIR)/asm/musyx/snd_synthapi.o\
 	$(BUILD_DIR)/asm/musyx/stream.o\
 	$(BUILD_DIR)/asm/musyx/synthdata.o\
diff --git a/src/musyx/seq_api.c b/src/musyx/seq_api.c
new file mode 100644
index 00000000..5f6b21a0
--- /dev/null
+++ b/src/musyx/seq_api.c
@@ -0,0 +1,35 @@
+#include "musyx/seq.h"
+
+void sndSeqStop(s32 unk) {
+    hwDisableIrq();
+    seqStop(unk);
+    hwEnableIrq();
+}
+
+void sndSeqSpeed(s32 unk1, s32 unk2) {
+    hwDisableIrq();
+    seqSpeed(unk1, unk2);
+    hwEnableIrq();
+}
+
+void sndSeqContinue(s32 unk) {
+    hwDisableIrq();
+    seqContinue(unk);
+    hwEnableIrq();
+}
+
+void sndSeqMute(s32 unk1, s32 unk2, s32 unk3) {
+    hwDisableIrq();
+    seqMute(unk1, unk2, unk3);
+    hwEnableIrq();
+}
+
+void sndSeqVolume(s32 unk1, s32 unk2, s32 unk3, s32 unk4) {
+    hwDisableIrq();
+    seqVolume(unk1, unk2, unk3, unk4);
+    hwEnableIrq();
+}    
+
+u16 seqGetMIDIPriority(s32 arg0, s32 arg1) {
+    return seqMIDIPriority[(u8)arg0][(u8)arg1];
+}