- NEXT 11 - Single · 2011
- 그래도 푸르른 날에 (Original Television Soundtrack), Pt. 11 - Single · 2015
- 트리니티블루 · 2001
- DULWICH CYPHER (with 이지후) - Single · 2022
- Enough To Live - Single · 2016
- Enough To Live - Single · 2016
- My Dear - Single · 2016
- My Dear - Single · 2016
- Fearful Love - Single · 2016
- Fearful Love - Single · 2016
- It's okay, It's life - Single · 2016
- It's okay, It's life - Single · 2016
- 사랑도 외롭다 - Single · 2016