Additional Dance Moves: Quiver Dance, Attract, Lunar Dance

Additional Song Moves: Bug Buzz, Relic Song, Round, Heal Bell, Snarl, Snore
Remove Rapid Spin from Song Moves list

Change the class back to the usual start with two feats, gain +1 to its stat structure.
Combine Dance Notation and Musical Score into one feat and Laban Notation and Crescendo Mark into one feat for the two core feats. (name one of them Dazzling the Stage!)

I'd also suggest that the combination Laban/Crescendo be usable targeting moves on a pokemon's list after they have acquired them, not just when they are first learning the move. Maybe make it lower frequency as well if this change is made.

Fortissimo Leap - No Miss is probably fine to combine, but Wall effects become non-sensical when combined, and moves that copy other moves such as Metronome, Mirror Move, etc probably shouldn't be combined