I like the way you interpreted the theme!
It is also fun to try other rhythm games when you also made something about the rhythm :)
As for suggestions I would probably divide rhythm sections and girl dealing with her tasks (for example, you could have a short section for the girl to deal with her emails, then another one for her to answer a call and so on), so we could see the illustrations and the narrative better :) Right now I am unable to concentrate on anything except these little arrows :D
The art style is absolutely gorgeous! Wishing you all the best with your future games :)