Horrible.
I give you 2 stars for originality. Although a boring rhythm game, it was original in the execution of the game itself.
Although, originality doesn't make much for a game. The timing on the whole "rhythm" (or what it REALLY is, is BEAT) was off. I play drums, have for the passed 10+ years, and know how to keep a beat and follow a beat with my hand, but apparently this game is no good at keeping a beat.