BIT.TRIP BEAT

Bit.Trip Beat, marketed as BIT.TRIP BEAT, is an arcade-style music video game developed by Gaijin Games and published by Aksys for the Wii's WiiWare download service.

Off-Sync
It's possible that, if the game doesn't properly run 60fps all the time, that the beats and music get off-sync. Other BIT.TRIP Games fix this problem where the music stops and plays at certain parts again syncing with the beats again.