I loved this game! The art is great and the sound was phenomenal. Some things I did notice:
The blue drum monster uses bells in its song, the minor third undertone really clashes with the song so the instrument choice wasn't ideal for the music.
The jump felt a little bit high at times.
The game controls super well and the art was great. Well done!
It would be cool if you could check out my game and give it a rating: https://itch.io/jam/brackeys-5/rate/925013