diff --git a/kaleid/kernel/io/spkr.c b/kaleid/kernel/io/spkr.c
index 252cb31..1f692d1 100644
--- a/kaleid/kernel/io/spkr.c
+++ b/kaleid/kernel/io/spkr.c
@@ -93,5 +93,6 @@ void IoDoStarWars(void)
 
     for (int i=0; i<40 ; i++) {
         IoDoTone(Score[i].tone, Score[i].time);
+        KePauseCPU();
     }
 }