김민규, 조준영 – To U
Track 21 from Album "IDOL (아이돌 : The Coup) OST"
Release Date: 2021.12.31
이은상, 김민규, 조준영, 홍은기 (HONG EUNKI) – 오늘 밤 (Tonight) (feat. 그린)
Track 04 from EP "IDOL (아이돌 : The Coup) OST Part.6"
Release Date: 2021.12.13
김민규, 조준영 – To U
Track 03 from EP "IDOL (아이돌 : The Coup) OST Part.6"
Release Date: 2021.12.13
김민규, 조준영 – Talking to the Moon
Track 02 from Single "IDOL (아이돌 : The Coup) OST Part.3"
Release Date: 2021.11.22