Very simple idea, but very solid and clean execution! This is a good entry all around. I only have a few minor gripes that could probably be fixed with a bit more time. It was quite fun to figure out how to clear levels even though I think I probably used unintended solutions for some of them! I cleared 8 levels before stopping :)
The music restarting every time a new level started did get a bit annoying and there is a lack of a volume slider unfortunately. Also, the physics with the ball were a bit inconsistent, I'm not sure how easy it would be to fix that. However, I did a few tests with the same lane setup and the ball went to slightly different locations each time.
Overall, great entry though!