When I saw the thread for this, I knew I had to play it. And I have to say, I really loved it. The palette changes every few levels. The sound effect when you jump - it sounds like an 8bit cat and I LOVE it. Oh and the music. Yes, the music is very cute and thoroughly fun to listen to.
It seems there are a couple of issues with the fanfares mashing in with the game music, particularly when completing the last level, where there's this huge blast of noise from what seems to be a fanfare trying to make itself heard over the in-game theme. And from the look of the springs, it's easy to mistake that you don't have to land on the top to use them, thus adding the unnecessary, deceivable challenge. But that aside, great jam entry!