Fantastic art style. I thought it was incredibly cute, and it fit the music very well.
As for the mechanics, I did feel as though they felt a little disconnected from each other. Appearing platforms, inverse gravity, and darkness don't necessarily fit together in a way that I thought felt cohesive.
However, if you had doubled down on the gravity mechanic, I think it would've taken this from good to great. Level 4 was a lot of fun, and undeniably the best one of the package.
Thanks for creating!