Lovely game, I can tell there's so much here that doesn't quite get its chance to shine due to bugs or not having enough time in the jam - whatever the case may be. I played with a keyboard, unfortunately, but I really enjoyed soaring through the air nonetheless. The colors, skyboxes, and shaders all look fantastic (reminded me a bit of that Pixar movie Soul)!
I couldn't figure out where to go in the 2nd level (never saw any platforms or piano keys) so I ended up skipping to the underworld level and that was pretty awesome, first time encountering the bounce orbs and I really liked that they made a musical tone lol, but the voice over cut off mid sentence and sent me to the main menu :<
If you/the two of you end up updating the game after the jam I would be very interested in trying it out again :D !