Getting 100% on a 1st playthrough is nigh on impossible, if you want 100% u're gonna want to load ur big game, beat it, and go new game+ and join the other league. Also, the songstress DS has 2 abilities that are only learned from Magical dances volumes 1 and 2, attained in chapter 5 from sidequest bosses. Good luck at getting 100% though, I got mine on my 2nd playthrough.