That was fun! The art and character design is charming, and the soundtrack is pretty cool. The mechanics are competent. I appreciate the audio calibrator!
(I am not very familiar with rhythm games, so my judgements might be a bit off base!)
The first level was my favorite; although the instrumentation felt a bit subtle at times, I did notice how the backing track coincided with the sequences of candies, and it was quite satisfying to bash them all away! Although, those arrows are a bit difficult to tell apart. I can tell that the candies behind them coincide with direction, which is a good decision, but maybe the arrows themselves could be easier to distinguish.
The second level was competent. The third level felt pretty strange, what with trying to hit the drum as quickly as possible. At least, I think that's what I'm supposed to do; I could be wrong about that.
All-in-all, good work!