some ayu songs are really similar, i'll list those i find similar~ do add your list too
1) AUDIENCE, Trauma, Fly High, too late, Boys & Girls
2) Pride, Marionette
3) evolution, UNITE! (similar in my opinion but evolution is much nicer
)
4) Connected, Naturally
5) M, Free & Easy (soft at the start and a powerful chorus~), momentum
6) talkin' 2 myself, decision
7) BLUE BIRD, fairyland
8) Together When..., fated
will add more when i think of the songs~!