오왠 (O.WHEN) – Fall In Love
Track 01 from Single "Fall In Love"
Release Date: 2017.10.18
오왠 (O.WHEN) – 어떻게 말할까
Track 01 from Single "수상한 파트너 OST Part.2"
Release Date: 2017.05.17
오왠 (O.WHEN) – 설렘
Track 01 from Single "남자친구 OST Part 5"
Release Date: 2018.12.26
오왠 (O.WHEN) – 난 당신의 고요함이
Track 01 from Single "난 당신의 고요함이"
Release Date: 2021.02.01
오왠 (O.WHEN) – 깊은 밤을 보내줘요
Track 01 from Single "소소한 이야기 Part.11"
Release Date: 2019.09.18
오왠 (O.WHEN) – Mystic World
Track 01 from Single "여우각시별 OST Part.5"
Release Date: 2018.11.06
오왠 (O.WHEN) – Stay
Track 01 from Single "단, 하나의 사랑 OST Part.5"
Release Date: 2019.06.19
오왠 (O.WHEN) – 가끔은 그래도 괜찮아 (Prod. 로코베리)
Track 01 from Single "트래블러 - 아르헨티나 OST Part.2"
Release Date: 2020.02.22