As someone not trained in these match-3 games, Meiling was the best I could manage by playing legit. Sakuya and Parsee, I managed to beat in a few retries by just spamming, which I'm not sure how to feel about.
Also, as someone not musically trained, the rhythm elements didn't do much. I don't really see the significance of the 4th metronome tick, and I was overly reliant on the visual indicator to know when to drop. I think the music would have to be much less subtle for it to feel natural for me to only tap once each measure.