Love the game the idea, and the music and sound effects also fit the game really well. I like how the game is forgiving in that you don't have to start the levels all over again when you fail to hit the target.
There are a few bugs though to take note of, such as some of the wall blocks not registering collisions correctly, and not being able to shoot the ball downwards enough (not sure if this is intentional). Nice game you've done though!