I love the art and I think the music was a lot of fun, though I agree with the other commenters that control screen was a bit much to not only learn but also remember. If you decided to expand on this game, it might be a good idea to consider spacing out when certain mechanics are introduced to make the tutorial more bite sized.
Other than that, I thought it was a great choice to have the fun music in the other world abruptly cut out when returning to reality. Great job!