BOY.D (보이.디 of 9와 숫자들) – 평행선 (Perfect)
Track 01 from Single "평행선 (Perfect)"
Release Date: 2021.10.05
BOY.D (보이.디 of 9와 숫자들) – 동그라미 (Dearest Elle)
Track 01 from Single "동그라미 (Dearest Elle)"
Release Date: 2018.10.10
BOY.D (보이.디 of 9와 숫자들) – Full of You (Ps. I Can’t Love You Enough)
Track 01 from Single "Full of You (Ps. I Can't Love You Enough)"
Release Date: 2019.12.09