1forever yours (feat. soyou) 26one of those nights (feat. crush) 28g.o.a.t (greatest of all time) 30i wanna be (feat. soyeon) 34perfect error (feat. seulgi) 35i will fight (feat. vinxen) 43eighteen (end of my world) 51hate that... (feat. taeyeon) 55one dream (with boa & henry) 57why are you here (feat. coco) 61boys & girls (with girls' generation) 65infatuation (feat. eunho) 66barbie girl (with jessica)