김정훈 – siso
Track 04 from EP "Miserable Of Happiness"
Release Date: 2023.10.30
최수호, 김정훈 – 사랑시 (Feat. 조은지, 김동찬)
Track 06 from EP "슬픈 노래 모음집"
Release Date: 2021.03.25
김정훈 – 도시 블루스
Track 02 from Album "진아 / 도시 블루스"
Release Date: 2001.11.20
윤정수, 김정훈 – 나를 위해 죽으셨네
Track 08 from Album "2021 증인들의 고백"
Release Date: 2021.06.25
조여정, 김정훈 – 애교
Track 01 from Single "로맨스가 필요해 OST Part.1"
Release Date: 2011.07.04
김정훈 – 그리움에
Track 04 from EP "5091"
Release Date: 2014.07.03
김정훈 – 우리가 만나는 동안에
Track 03 from EP "5091"
Release Date: 2014.07.03
김정훈 – 그때말야
Track 01 from EP "5091"
Release Date: 2014.07.03
김정훈 – Thank You
Track 05 from Album "Sweet & Strong"
Release Date: 2003.08.21
김정훈 – 서약
Track 04 from Album "Sweet & Strong"
Release Date: 2003.08.21
김정훈 – 나의 신부에게
Track 03 from Album "Sweet & Strong"
Release Date: 2003.08.21
김정훈 – Feeling
Track 01 from Album "Sweet & Strong"
Release Date: 2003.08.21
김정훈 – Taboo
Track 09 from Album "待 / Machi (기다림)"
Release Date: 2010.11.17
김정훈 – 다시
Track 01 from Single "자체발광 그녀 OST Part.1"
Release Date: 2012.02.13
김정훈 – ガラスの果實 / Garasuno Kajitsu(유리의 과실)
Track 07 from Album "待 / Machi (기다림)"
Release Date: 2010.11.17
김정훈 – 눈에 밟혀서 (Radio Edit Ver.)
Track 05 from EP "First Mini Album"
Release Date: 2009.09.01
김정훈 – 그댄 없는걸
Track 04 from EP "First Mini Album"
Release Date: 2009.09.01