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. It was released in 2009 in North America, and released in Japan and PAL regions in the same year.

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.