There's a high level of polish here- the game looks really good, with a nice title screen, release quality UI, and even a super fancy itch.io page.
The design of the main character reminds me of PowerPuff Girls.
I did run into the bug where the music didn't work, but the second time I played the game it seemed to go fine.
I didn't get very far unfortunately. I'm terrible at rhythm games in general, and I found the first level really difficult. Every time I think I've got it the beat changes, and while that's probably a fun challenge for people who are actually good at rhythm games as someone who sucks at them I wish at least the first level didn't do that.
I wish there was more I could say about it. There's clearly a good game here, and it looks to be very complete and polished as well.