이정 – 내 곁엔
Track 03 from Album "2004 MBC대학가요제"
Release Date: 2004.12.21
이정 – My everything
Track 01 from Single "My everything"
Release Date: 2021.11.17
전봉진, 이재훈 (쿨), 이정, Esther, Paul – 내 사랑 주여 (My Road)
Track 06 from Album "This Love"
Release Date: 2012.12.18
이정 – 사랑한다…그래서…이별한다
Track 02 from Album "우리집에 왜왔니 OST"
Release Date: 2008.04.17
이정 – Faith Is The Victory
Track 04 from Album "I Am Melody 3 (아이 엠 멜로디 3)"
Release Date: 2015.10.30
이정 – 오직 그대만
Track 03 from Album "내일이 오면 OST"
Release Date: 2012.03.23
하동균, 이정 – Beautiful Day
Track 01 from Single "Beautiful Day"
Release Date: 2015.05.29
하동균, 이정 – 기다릴게
Track 01 from Single "공주의 남자 OST Part.3"
Release Date: 2011.08.04
이정 – 너였으면 좋겠어
Track 04 from Album "이웃집 꽃미남 OST Special Edition"
Release Date: 2013.03.08
이정, 10CM – Nothing Without You
Track 02 from Single "심폐소생송 Special Album Part.2"
Release Date: 2015.09.28
이정 – 벙어리
Track 03 from Album "장옥정, 사랑에 살다 OST"
Release Date: 2013.06.17
이정 – 너였으면 좋겠어
Track 03 from Album "The OST"
Release Date: 2019.03.14
윤종신, 이정 – 두 이별
Track 01 from Single "2011 月刊 尹鍾信 May"
Release Date: 2011.04.29
윤종신, 이정 – 두 이별
Track 06 from Album "行步 2011 尹鍾信"
Release Date: 2011.12.06