not bad!
Its a little incomplete but it was mildly entertaining!
some advice:
1. collison detection was a tad sketchy, i didnt think i meant to pass through the platform when i jumped at it from below?
2. you should have it to where if you tap the "up" button quickly the ball does a little jump and if you hold the button, it will do a bigger jump.
3. you need to make it longer!
Overal you did good, the music was great, and the graphics were mediocere!