diff --git a/MusicPlayer.cpp b/MusicPlayer.cpp
index 63092bb..9d3c40d 100644
--- a/MusicPlayer.cpp
+++ b/MusicPlayer.cpp
@@ -28,6 +28,12 @@ MusicPlayer::startPlayingFile(const char *trackname)
   return musicPlayer->startPlayingFile(trackname);
 }
 
+boolean
+MusicPlayer::isPlaying()
+{
+  return musicPlayer->playingMusic;
+}
+
 void
 MusicPlayer::stopPlaying()
 {
diff --git a/MusicPlayer.h b/MusicPlayer.h
index e7e652b..528edb0 100644
--- a/MusicPlayer.h
+++ b/MusicPlayer.h
@@ -9,6 +9,7 @@ public:
   MusicPlayer(int8_t cs, int8_t dcs, int8_t dreq, int8_t cardcs);
   boolean startPlayingFile(const char *trackname);
   void setVolume(uint8_t left, uint8_t right);
+  boolean isPlaying();
   void stopPlaying();
   void poll(unsigned long jiffies);			// Call this once per loop()
 };
diff --git a/ProtonPack.ino b/ProtonPack.ino
index cc4c9bf..5c4b2d6 100644
--- a/ProtonPack.ino
+++ b/ProtonPack.ino
@@ -25,7 +25,7 @@ Synchrotron *sync1;
 #define DEBUG 13
 
 // Inputs
-#define TRIGGER 9
+#define TRIGGER 8
 
 // global time counter
 unsigned long jiffies = 0;
@@ -63,18 +63,34 @@ void loop() {
 
   music->poll(jiffies);
 
-  if (state == 0) {
-    if (new_jiffies > jiffies) {
-      if (trigger) {
+  switch (state) {
+  case 0:
+    if (trigger) {
+      if (music->startPlayingFile("track001.mp3")) {
 	state = 1;
-	music->startPlayingFile("track001.mp3");
 	sync1->charge();
       }
-
-      jiffies = new_jiffies;
-      sync1->tick(jiffies);
-      flashDebug();
     }
+    break;
+  case 1:
+    if (! music->isPlaying()) {
+      if (music->startPlayingFile("track002.mp3")) {
+	state = 4;
+	sync1->standby();
+      }
+    }
+    break;
+  case 4:
+    if (! music->isPlaying()) {
+      state = 0;
+    }
+    break;
+  }
+
+  if (new_jiffies > jiffies) {
+    jiffies = new_jiffies;
+    sync1->tick(jiffies);
+    flashDebug();
   }
 }
 
diff --git a/Synchrotron.cpp b/Synchrotron.cpp
index facc0a3..3ed1c32 100644
--- a/Synchrotron.cpp
+++ b/Synchrotron.cpp
@@ -37,10 +37,9 @@ Synchrotron::discharge() {
 }
 
 Synchrotron::tick(unsigned long jiffies) {
-  float adj = (float)ticks / (float)tickrate;
-  byte raa = r * adj;
-  byte gaa = g * adj;
-  byte baa = b * adj;
+  byte raa = r * ticks / tickrate;
+  byte gaa = g * ticks / tickrate;
+  byte baa = b * ticks / tickrate;
   byte ra = r - raa;
   byte ga = g - gaa;
   byte ba = b - baa;