HowL

- Perhaps Love
- Princess Hours (Original Television Soundtrack) · 2006
- Love U
- 꽃보다 남자 Best Collection (Original Television Soundtrack) · 2009
- Mr. Queen
- Mr. Queen (Original Television Soundtrack) · 2021
- Dear Friend
- Love to Hate You (Original Soundtrack from the Netflix Series) · 2023
- Other World
- Mr. Queen (Original Television Soundtrack) · 2021
- 아끼지 말아요
- Ro맨틱? No맨틱! Pt. 2 : 아끼지 말아요 - Single · 2010
- Bromance Blues
- Love to Hate You (Original Soundtrack from the Netflix Series) · 2023
- Retro Cool Blues
- Love to Hate You (Original Soundtrack from the Netflix Series) · 2023
- I Love Spaghetti
- Love to Hate You (Original Soundtrack from the Netflix Series) · 2023
- Iron Tango
- Mr. Queen (Original Television Soundtrack) · 2021
- No Touch
- Mr. Queen (Original Television Soundtrack) · 2021
- Sweet Sorrow
- Love to Hate You (Original Soundtrack from the Netflix Series) · 2023
- 보고 싶어요 (Remake Version)
- Remade 0506 '눈 속, 기억의 조각' (Remake Version) · 2005

바람의 화원 (Original Television Soundtrack)

바람의 화원 (Original Television Soundtrack)

2008
90 DAYS TIME FOR LOVE (Original Soundtrack)

90 DAYS TIME FOR LOVE (Original Soundtrack)

2006

고봉실 아줌마 구하기 (Original Television Soundtrack) - Single

고봉실 아줌마 구하기 (Original Television Soundtrack) - Single

2012
버디버디, Pt. 2 (Original Television Soundtrack) - Single

버디버디, Pt. 2 (Original Television Soundtrack) - Single

2011
버디버디 (Original Television Soundtrack) Pt. 1 - Single

버디버디 (Original Television Soundtrack) Pt. 1 - Single

2011
Romance Town, Pt. 4 (Original Soundtrack) - Single

Romance Town, Pt. 4 (Original Soundtrack) - Single

2011
Ro맨틱? No맨틱! Pt. 2 : 아끼지 말아요 - Single

Ro맨틱? No맨틱! Pt. 2 : 아끼지 말아요 - Single

2010
태양을 삼켜라 (Original Television Soundtrack), Vol. 2 - EP

태양을 삼켜라 (Original Television Soundtrack), Vol. 2 - EP

2009