허찬조, [How Could You Leave Me] [Track Credit] 1. How Could You Leave Me (Feat. SAYA) Lyrics by SAYA Composed by 허찬조, SAYA Arranged by 허찬조 All instruments by 허찬조 Chorus by SAYA [Album Credit] Executive Producer : 허찬조, 석찬우 Co-Producer / A&R : STONESHIP Artwork : cheonjaeho Mixing Engineer : 허찬조 Mastering Engineer : 박경선 @ Boost Knob