So far this is the most polished game I've seen from this jam. The puzzles feel incredibly well designed, the harmonious music is very fun to make, and it really delivers that "AHA!" moment like nothing else I've seen. The combo of beats and brain teasing works so well and it fits the jam theme in a really unique way. I can't really think of anything negative about this game, it's really well done. I think some sound effects for the buttons is really the only thing that could be added but honestly with how creative the beats are, the miniscule things like that should only be considered as an afterthought.
TL;DR: Best game I've played so far, insanely well built and the puzzles/music are super creative. 10/10 would love to see a full release