Every Single Day

- Super Power Girl
- 25th Anniversary Theme Songs Collection · 2017
- 에코
- 너의 목소리가 들려 (Original Television Soundtrack), Pt. 1 - EP · 2013
- Challenge
- Pinocchio, Pt. 3 (Original Television Soundtrack) - Single · 2014
- My Story
- Pinocchio, Pt. 3 (Original Television Soundtrack) - Single · 2014
- Non-Fiction
- Pinocchio, Pt. 3 (Original Television Soundtrack) - Single · 2014
- 돌고래
- 너의 목소리가 들려 (Original Television Soundtrack), Pt. 1 - EP · 2013
- Seventeen
- 30 But 17 (Original Soundtrack) · 2018
- Lucky Day (with 스카웨이커스)
- Lucky Day - EP · 2015
- The New Beginning (feat. 요한)
- Tom's Diary · 2007
- Echo (Acoustic Version)
- I hear your voice (Original Soundtrack) · 2013
- Perfect Life (feat. Mxxg)
- Couple on the Backtrack (Original Television Soundtrack) [Special] · 2017
- 소나기
- Cheongdamdong Alice, Vol. 1 (Original Television Soundtrack) · 2012
- Get Me Now
- 저글러스 (Original Soundtrack), Pt.2 - Single · 2017

My Sweet Mobster (Original Television Soundtrack), Pt.1 - Single

My Sweet Mobster (Original Television Soundtrack), Pt.1 - Single

2024
Once Upon a Small Town (Original Television Soundtrack), Pt.5 - Single

Once Upon a Small Town (Original Television Soundtrack), Pt.5 - Single

2022
18 again, Pt. 9 (Original Television Soundtrack) - Single

18 again, Pt. 9 (Original Television Soundtrack) - Single

2020
Why Didn't You Say That? - Single

Why Didn't You Say That? - Single

2019
특별근로감독관 조장풍 (Original Soundtrack), Pt.2 - Single

특별근로감독관 조장풍 (Original Soundtrack), Pt.2 - Single

2019
30 But 17 (Original Soundtrack), Pt. 1 - Single

30 But 17 (Original Soundtrack), Pt. 1 - Single

2018
저글러스 (Original Soundtrack), Pt.2 - Single

저글러스 (Original Soundtrack), Pt.2 - Single

2017