The One (더원) – 바람이 분다 (원곡가수 이소라)
Track 03 from EP "'나는 가수다 2' 2012 가왕전 5강전"
Release Date: 2012.12.09
The One (더원) – 사랑아
Track 02 from Album "내 남자의 여자 OST"
Release Date: 2007.05.07
The One (더원), 남주희 – 내 여자
Track 01 from Single "듀엣가요제 38회"
Release Date: 2017.01.27
The One (더원) – 기다리는 사랑
Track 03 from Album "소문난 칠공주 OST"
Release Date: 2006.08.30
The One (더원) – 잘 있나요
Track 04 from Album "구가의 서 OST"
Release Date: 2013.06.24
The One (더원) – 너에게 간다
Track 03 from Album "사임당, 빛의 일기 OST"
Release Date: 2017.04.26
The One (더원) – Give Love On Christmas Day (Feat.MC Link,Merc)
Track 22 from Album "하얀 겨울 2005"
Release Date: 2005.12.05
The One (더원) – Nella Fantasia (내 환상 속으로)
Track 05 from EP "오페라스타 2012 Round 2"
Release Date: 2012.02.20
The One (더원) – E Lucevan Le Stelle (별은 빛나건만)
Track 03 from Album "오페라스타 2012 Round 1"
Release Date: 2012.02.13
The One (더원) – 겨울사랑 (Piano Ver.)
Track 06 from Album "그 겨울, 바람이 분다 OST"
Release Date: 2013.05.16
태연 (TAEYEON), The One (더원) – 별처럼
Track 01 from Single "별처럼"
Release Date: 2010.11.17
The One (더원) – 겨울사랑
Track 03 from Album "그 겨울, 바람이 분다 OST"
Release Date: 2013.05.16
The One (더원) – 사랑할게 (온리유)
Track 06 from Album "All Time Drama"
Release Date: 2006.12.04
The One (더원) – 회상
Track 02 from EP "故김현식 30주기 헌정앨범 “추억 만들기” Part 7"
Release Date: 2021.03.26
백지영, 선미, 다비치, 주은, 정채연, 진세연, 은혁 (EUNHYUK), 엔알지 (NRG), 문빈 (ASTRO), MJ (ASTRO), 오운 (OOON), 재용 (JAE YONG), 희천 (HEE CHEON), 희도, 건민, 문종업, 영재, The One (더원), 김조한 – FLY DAY
Track 01 from Single "FLY DAY"
Release Date: 2017.11.13