FANTASTIC!!!! I'm a huge fan of Steven Universe, I think you perfectly reproduced the style of Amethyst, : ).
However, I think it would be much better if hitting points are consistent with the beat of the music (use BPM to calculate), and make the direction arrow from Pearl more easier to recognize, they come out with light color and small size, it's hard to react sometimes, LOL.
Thanks again for creating this game, I am really looking forward to play more SU games!!!!!