This is a really nice game: great art style, a nice take on the theme, and pretty fun. It's kind of like breakout/pong, but if you had multiple paddles and the music was also generated on the fly (no pun intended).
This is probably a symptom of being a laptop gamer, but one thing I'd like to see are keyboard controls: something like left/right to move the lilypads and up/down to select between them might work.