Love the idea of this so much. A rhythmic avoidance game? Fantastic.
I had some issues with the movement—either I kept falling out of rhythm, which may well be the case as I am not a very rhythmic person, or inputs would randomly start failing. When that happened I could usually press a different direction and get going again, but that really could just be "re-aligning" to the rhythm. Hard to say. It was definitely difficult to persuade the game to let me free if an enemy overlapped the player in the same square, though.
Honestly, already a fairly solid game, but with another polishing pass and a bit more *oomph* to the music, I think you'll have something great.
(Another commenter mention the bubbles—I read those as, like, dancefloor spotlights? Were they? Now I am curious.)