Thank you very much, Dalton, but I can't take any credit for the music; it's Kevin MacLeod. Should've made that obvious.
With regards to a lack of engagement, is that because the only reward for beating a level is getting to the next one?
I haven't decided on whether or not I'm doing a post-jam version quite yet... but that hasn't stopped me from coming up with a list of changes if I were to. One of them was to add a world map, and make levels feature more like Mario 64; so getting 100% would entail beating every level on every mode. Would that sense of progression help to make the game more engaging?