Goodbye Boy Lyrics by YUNHWAY Composed by YUNHWAY, sAewoo, ARCX (아르코) Arranged by sAewoo, ARCX (아르코) Guitar by Bk Bass & Synthesizer by ARCX (아르코) Piano, String & EP by sAewoo Mixed by sAewoo @ WEDAPLUGG Studio Mastered by 박경선 @ BOOST KNOB Artwork by TREE13 A&R Directed by Chang Mo Kwon (C) 2021 WEDAPLUGG Records