That was very fun! Half of my deaths were just me dancing to the tune, hahahaha! I think you nailed that game feel. It feels like a rythm game, and the minimalistic graphics still suit the game very well. One way I think that can improve in this game is the sound when you press space. It could change a little, to don't be repetitive. Better yet, it could sound like a drum beat, or another musical instrument, hahaha! Or also add some shader effects to change colors as the game progresses, I don't know.
Very solid entry. Congratulations!