Hey, thanks for the review! We appreciate the fact you took the time to play our game, out of the hundreds that are parts of the Jam.
We put a reset button (bound to R) in case the player would get stuck on geometry, because of the type of platformer we created, the player getting stuck is eventually going to get stuck.
As for the music, you're completely right! We didn't take much time to think about it, and thus our game suffers a bit from it. Though none of us in the team has experience composing, free ambient music might help.
I think we could take a look at the controls and change them to make them more precise.