사랑은 쉽게 변한대 [Credit] 1. 알고있었어 (Feat. Gist) Lyrics by Urban Fisher, Gist Composed by TOIL, kyuu, Urban Fisher, Gist Arranged by TOIL, kyuu Guitar by 정경환 Drum, Bass, Percussion by TOIL 2. 혼자가 되는 법 Lyrics by Urban Fisher Composed by TOIL, Urban Fisher Arranged by TOIL, 박병일 Piano by 박병일 Mixed by allday4real @allday4real Mastered by allday4real @allday4real Photo by 박재효 @parkzaehyo