Nice game, had a nice time with it, but to be completely honest, the beats just weren't in sync with the notes. Really, play the game, and try to hit the notes to the beat, you can't get perfects if you just listen to the song, without loking at the white circles. And, as someone already said, it's hard to understand what "instrument" of the song, like bass, snare or any other, you want us to follow the beat of.
Maybe it's just me, but I'm just trying to help, good game anyways.