Good effort for your first game and game jam, well done!
I liked the challenge but the game would have been a bit easier if you could rotate the camera up and down - sometimes the ball covered up the view of the next platform.
Also I liked the song but if someone was bad at the game and took longer than the song lasts to complete a level then the song would end and leave them in silence. Don't ask me how I know that...
Anyway my best time on the first level was 33s.