EPTEND’, 싱글 ‘GTA SEOUL’ 발매 Shoutout to every Seoul city blocks from 가리봉 to 홍대 Credit) GTA SEOUL Feat. Chillin Homie (Produced by DOOMSDAY) Composed by DOOMSDAY, EPTEND Arranged by DOOMSDAY Lyrics by EPTEND, Chillin Homie Mixed by Gameboy 88 Mastered by 박주홍 Executive Producer. EPTEND