Epitone Project

- 첫사랑
- Words in the Mind · 2018
- 나는 그 사람이 아프다 (feat. Taru)
- 사랑의 단상 Chapter 1 : With Or Without You · 2008
- 이화동 (with 한희정)
- 유실물 보관소 · 2010
- 오늘 (with 심규선)
- 유실물 보관소 · 2010
- 유채꽃
- 유실물 보관소 · 2010
- 봄날, 벚꽃 그리고 너
- At Your Favorite Place · 2008
- 선인장 (feat. 차세정)
- Short Stories. 1 - 선인장 · 2010
- Daybreak
- One Day in a Stranger City · 2012
- 선인장 (with 심규선)
- 유실물 보관소 · 2010
- 그대는 어디에 (feat. Han Hee Jung)
- 긴 여행의 시작 - EP · 2009
- Sleepless (feat. Younha)
- Sleepless (feat. Younha) - Single · 2020
- 고백 (feat. Lee Jin Woo & 조예진)
- 결코 끝나지 않을 우리들의 이야기 (Hommage to Moonrise, Pastel Music Presents) · 2009
- Reason
- Reason - Single · 2021

knock (Vocal by YOONA) - Single

knock (Vocal by YOONA) - Single

2023
STOP OVER - EP

STOP OVER - EP

2022
Reason - Single

Reason - Single

2021
Sleepless (feat. Younha) - Single

Sleepless (feat. Younha) - Single

2020
도도솔솔라라솔 Part.8 (Original Soundtrack) - Single

도도솔솔라라솔 Part.8 (Original Soundtrack) - Single

2020
Extraordinary You Pt.4 (Original Television Soundtrack) - Single

Extraordinary You Pt.4 (Original Television Soundtrack) - Single

2019
Love, That Suffocating Moment : Sketchbook - Single

Love, That Suffocating Moment : Sketchbook - Single

2019