Honestly - one of the best games I have played on this jam. Maybe it is just my opinion but rythm games have this spirit which other games don't. Big cograts on making this. Making main character and hearts animate to the beat was just an excellent idea. Only thing I would change/add would be to
1) let user know that he has hit the right note - small, little text like nice/cool would be just perfect
2) make impact stronger - upon hitting the right note I would add some screenshake or temporarly distort a lens or just scale camera - just to achieve this boom effect. Overall I have really enjoyed playing this game - thank you for developping it. Keep it up