Brick Single [What if] @brick_won [What if] Produced by Brick, BAN ESTIN Lyrics by Brick Composed by Brick, BAN ESTIN Arranged by BAN ESTIN Piano by BAN ESTIN Drum, Bass by BAN ESTIN Synthesizer by BAN ESTIN guitar by 김성주 Chorus by Brick Mixed by 장태인 at SEOUL ARCHIVE Mastered by 장태인 at SEOUL ARCHIVE Cover Art & Lyric Video by ONJEOM