You are my Hero, but sometimes i'll be yours. Wherever you are, whenever you are. [HERO] Lyrics by Suyo, cyd Composed by SOQI, Suyo, 손길현 Arranged by SOQI, 손길현 Keyboard & Synth by 손길현 Guitar by 손길현 Bass by SOQI, 손길현 Drum by SOQI Executive Producer 김재덕 Producer 권빈기 Director GRASS, 권주영, 김현민 A&R 권주영, 서여경, 조수빈, 김용범 Artist Management 한재욱, 정세진, Conflow Company Planning & Marketing 최윤정 Media Contents 전옥화 Assistant 박다율 Vocal Director cyd Background Vocal Making cyd Recording STUDIOS Velvet Studio Recording Engineers Lee Sangduk Digital Edited cyd, 김준상 Mixing Engineers 김준상 Mastering Engineers 김준상 Design Director 권주영, GRASS Photographer 권주영 Hair Stylist 김국화 Make Up 김국화 Stylist 권주영, 서여경