diff --git a/metronom.ino b/metronom.ino
index d16f522..fa8a1db 100644
--- a/metronom.ino
+++ b/metronom.ino
@@ -25,21 +25,17 @@ void setup() {
   initButton();
 
   ITimer.attachInterruptInterval_MS(10, TimerHandler);
-  ISR_Timer.setInterval(PERIOD_MS, metronomeBeat);
-  ISR_Timer.setInterval(PERIOD_MS, metronomeCountdown);
+  ISR_Timer.setInterval(PERIOD_MS, metronomeRun);
 }
 
-void metronomeCountdown() {
+void metronomeRun() {
   if (countdown > 0) {
     countdown -= 1;
 
     digitalWrite(BUTTON_LED_PIN, countdown % 2 ? HIGH : LOW);
+  } else if (countdown == 0) {
+    //tone(BUZZER_PIN, 1000, 100);
   }
 }
 
-void metronomeBeat() {
-  if (countdown == 0)
-    tone(BUZZER_PIN, 1000, 100);
-}
-
 void loop() {}