Really polished game!
Its really difficult setting, but it has potential.
I feel like the game will be much more cool, if combos will accept a key, only pressed synchronized with the beat, otherwise, combo will fail.
It would be also really cool if the bosses will let the player be closer and "dance" around, with cancelling animation. Right now, almost all abilities force the player to stay away.
But over all the game is really fun and I like that.
GJ!