O.WHEN

- Today
- When I Begin - EP · 2016年
- Let Go of All the Trace of Time
- 015B Anthology Part.3 - Single · 2017年
- Cause It's First Time
- When It Loves - EP · 2018年
- Rainbow (Acoustic Version)
- My Mister (Original Television Soundtrack) · 2018年
- Heartbeat
- Encounter, Pt. 5 (Original Television Soundtrack) - Single · 2018年
- How To Say
- Suspicious Partner Original Soundtrack Pt.2 - Single · 2017年
- Sunset Village
- Once Upon a Small Town (Original Television Soundtrack) Special · 2022年
- Mystic World
- 여우각시별 (Music from the Original Tv Series), Pt. 5 - Single · 2018年
- STAY
- Angel's last mission : love (Original Television Soundtrack) · 2019年
- Monologue
- When I Begin - EP · 2016年