Why do bullet hell games always feature little anime girls as the characters? No, seriously, I've always been curious.
Anyway, not bad. The hitbox for my character wasn't immediately obvious so that kind of bothered me. Unless I overlooked it, maybe it would be helpful to include a little visual on the character (that stood out) to better represent the hitbox.
The uploading music thing is way cool and I've never seen that done before in a flash game. Nice innovation.