diff --git a/lib/DSE/asm/include/main_020723C0.inc b/lib/DSE/asm/include/main_020723C0.inc
deleted file mode 100644
index e6797521..00000000
--- a/lib/DSE/asm/include/main_020723C0.inc
+++ /dev/null
@@ -1,2 +0,0 @@
-#pragma once
-.public _s32_div_f
diff --git a/lib/DSE/asm/include/main_02072668.inc b/lib/DSE/asm/include/main_02072668.inc
deleted file mode 100644
index e6797521..00000000
--- a/lib/DSE/asm/include/main_02072668.inc
+++ /dev/null
@@ -1,2 +0,0 @@
-#pragma once
-.public _s32_div_f
diff --git a/lib/DSE/asm/main_020723C0.s b/lib/DSE/asm/main_020723C0.s
deleted file mode 100644
index 3ce64b19..00000000
--- a/lib/DSE/asm/main_020723C0.s
+++ /dev/null
@@ -1,32 +0,0 @@
-	.include "asm/macros.inc"
-	.include "include/main_020723C0.inc"
-
-	.text
-
-	arm_func_start DseTrackEvent_VolumeFade
-DseTrackEvent_VolumeFade: ; 0x020723C0
-	stmdb sp!, {r4, r5, r6, lr}
-	mov r5, r0
-	ldrsb r1, [r5, #2]
-	ldrb r2, [r5]
-	ldrb r0, [r5, #1]
-	mov r4, r3
-	mov r1, r1, lsl #0x10
-	add r0, r2, r0, lsl #8
-	mov r0, r0, lsl #0x10
-	str r1, [r4, #0x34]
-	movs r6, r0, lsr #0x10
-	streq r1, [r4, #0x2c]
-	beq _02072410
-	ldr r0, [r4, #0x2c]
-	subs r0, r1, r0
-	moveq r6, #0
-	beq _02072410
-	mov r1, r6
-	bl _s32_div_f
-	str r0, [r4, #0x30]
-_02072410:
-	strh r6, [r4, #0x38]
-	add r0, r5, #3
-	ldmia sp!, {r4, r5, r6, pc}
-	arm_func_end DseTrackEvent_VolumeFade
diff --git a/lib/DSE/asm/main_02072668.s b/lib/DSE/asm/main_02072668.s
deleted file mode 100644
index 11dbf561..00000000
--- a/lib/DSE/asm/main_02072668.s
+++ /dev/null
@@ -1,32 +0,0 @@
-	.include "asm/macros.inc"
-	.include "include/main_02072668.inc"
-
-	.text
-
-	arm_func_start DseTrackEvent_PanFade
-DseTrackEvent_PanFade: ; 0x02072668
-	stmdb sp!, {r4, r5, r6, lr}
-	mov r5, r0
-	ldrsb r1, [r5, #2]
-	ldrb r2, [r5]
-	ldrb r0, [r5, #1]
-	mov r4, r3
-	mov r1, r1, lsl #0x10
-	add r0, r2, r0, lsl #8
-	mov r0, r0, lsl #0x10
-	str r1, [r4, #0x44]
-	movs r6, r0, lsr #0x10
-	streq r1, [r4, #0x3c]
-	beq _020726B8
-	ldr r0, [r4, #0x3c]
-	subs r0, r1, r0
-	moveq r6, #0
-	beq _020726B8
-	mov r1, r6
-	bl _s32_div_f
-	str r0, [r4, #0x40]
-_020726B8:
-	strh r6, [r4, #0x48]
-	add r0, r5, #3
-	ldmia sp!, {r4, r5, r6, pc}
-	arm_func_end DseTrackEvent_PanFade
diff --git a/lib/DSE/include/main_020723C0.h b/lib/DSE/include/main_020723C0.h
new file mode 100644
index 00000000..4d76871a
--- /dev/null
+++ b/lib/DSE/include/main_020723C0.h
@@ -0,0 +1,8 @@
+#ifndef PMDSKY_MAIN_020723C0_H
+#define PMDSKY_MAIN_020723C0_H
+
+#include "dse.h"
+
+u8* DseTrackEvent_VolumeFade(u8 *ptr_next_byte, struct dse_sequence *sequence, struct dse_track *track, struct dse_channel *channel);
+
+#endif
diff --git a/lib/DSE/include/main_02072668.h b/lib/DSE/include/main_02072668.h
new file mode 100644
index 00000000..291c4839
--- /dev/null
+++ b/lib/DSE/include/main_02072668.h
@@ -0,0 +1,8 @@
+#ifndef PMDSKY_MAIN_02072668_H
+#define PMDSKY_MAIN_02072668_H
+
+#include "dse.h"
+
+u8* DseTrackEvent_PanFade(u8 *ptr_next_byte, struct dse_sequence *sequence, struct dse_track *track, struct dse_channel *channel);
+
+#endif
diff --git a/lib/DSE/src/main_020723C0.c b/lib/DSE/src/main_020723C0.c
new file mode 100644
index 00000000..a4478bb6
--- /dev/null
+++ b/lib/DSE/src/main_020723C0.c
@@ -0,0 +1,22 @@
+#include "main_020723C0.h"
+
+u8* DseTrackEvent_VolumeFade(u8 *ptr_next_byte, struct dse_sequence *sequence, struct dse_track *track, struct dse_channel *channel)
+{
+    u16 ticks = ptr_next_byte[0] + (ptr_next_byte[1] << 8);
+    s32 target = *(s8 *)&ptr_next_byte[2] << 16;
+
+    channel->volume.target = target;
+    if (ticks == 0) {
+        channel->volume.current = target;
+    } else {
+        s32 diff = target - channel->volume.current;
+
+        if (diff == 0) {
+            ticks = 0;
+        } else {
+            channel->volume.delta = diff / ticks;
+        }
+    }
+    channel->volume.ticks_remaining = ticks;
+    return ptr_next_byte + 3;
+}
diff --git a/lib/DSE/src/main_02072668.c b/lib/DSE/src/main_02072668.c
new file mode 100644
index 00000000..9f7f2cf1
--- /dev/null
+++ b/lib/DSE/src/main_02072668.c
@@ -0,0 +1,22 @@
+#include "main_02072668.h"
+
+u8* DseTrackEvent_PanFade(u8 *ptr_next_byte, struct dse_sequence *sequence, struct dse_track *track, struct dse_channel *channel)
+{
+    u16 ticks = ptr_next_byte[0] + (ptr_next_byte[1] << 8);
+    s32 target = *(s8 *)&ptr_next_byte[2] << 16;
+
+    channel->pan.target = target;
+    if (ticks == 0) {
+        channel->pan.current = target;
+    } else {
+        s32 diff = target - channel->pan.current;
+
+        if (diff == 0) {
+            ticks = 0;
+        } else {
+            channel->pan.delta = diff / ticks;
+        }
+    }
+    channel->pan.ticks_remaining = ticks;
+    return ptr_next_byte + 3;
+}
diff --git a/main.lsf b/main.lsf
index df23a2ef..01ea5a6c 100644
--- a/main.lsf
+++ b/main.lsf
@@ -387,13 +387,13 @@ Static main
 	Object lib/DSE/src/main_0207222C.o
 	Object lib/DSE/src/main_0207227C.o
 	Object lib/DSE/src/main_02072310.o
-	Object lib/DSE/asm/main_020723C0.o
+	Object lib/DSE/src/main_020723C0.o
 	Object lib/DSE/src/main_0207241C.o
 	Object lib/DSE/src/main_020724A8.o
 	Object lib/DSE/src/main_02072504.o
 	Object lib/DSE/src/main_02072554.o
 	Object lib/DSE/src/main_020725D4.o
-	Object lib/DSE/asm/main_02072668.o
+	Object lib/DSE/src/main_02072668.o
 	Object lib/DSE/src/main_020726C4.o
 	Object lib/DSE/src/main_02072720.o
 	Object lib/DSE/src/main_02072770.o