선율, 이진혁, 환희 – Flower
Track 01 from Single "미스마, 복수의 여신 OST Part.3"
Release Date: 2018.10.20
선율, 환희, 샤오 – OH! Ready!
Track 01 from Single "몽슈슈 글로벌 하우스 OST Part.1"
Release Date: 2019.11.09
환희, 조이 (JOY) – 사진 (평창의 마스코트 나야나 수호랑, 넌 내게 반했어 반다비)
Track 02 from Single "복면가왕 121회"
Release Date: 2017.07.23
환희, 선율, 고결, 샤오 – 부르지마
Track 01 from Single "애니메이션 텔레몬스터 OST"
Release Date: 2017.04.18
니엘, 창조, 환희 – Suddenly (voice only)
Track 02 from Single "TOP VOICE"
Release Date: 2021.12.10
니엘, 창조, 환희 – Suddenly
Track 01 from Single "TOP VOICE"
Release Date: 2021.12.10
환희 – Everyday
Track 06 from EP "H Soul"
Release Date: 2009.10.22
환희 – 내 이별의 시간은 거꾸로 간다
Track 05 from EP "H Soul"
Release Date: 2009.10.22
환희 – Getting Down
Track 04 from EP "H Soul"
Release Date: 2009.10.22
환희 – 늦은 고백
Track 03 from EP "H Soul"
Release Date: 2009.10.22
환희 – Bring It Back
Track 02 from EP "H Soul"
Release Date: 2009.10.22
환희 – 심장을 놓쳐서
Track 01 from EP "H Soul"
Release Date: 2009.10.22
환희 – 그대가 가르쳐준 이별
Track 10 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 사랑해 사랑해 (Feat. 세용)
Track 09 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – T By Tears
Track 08 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 남남 (Feat. 메이다니)
Track 07 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 어젠 (Original Hwanhee Ver.)
Track 05 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 죽을 것만 같아
Track 03 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 하루 종일 (All Day)
Track 02 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – Temptation (Intro)
Track 01 from Album "Hwanhee"
Release Date: 2011.07.29
환희 – 널 사랑했던 계절
Track 01 from Single "널 사랑했던 계절"
Release Date: 2020.11.24
베이빌론 (Babylon), 환희 – Everything
Track 01 from Single "Everything"
Release Date: 2018.01.30
환희, 숙희 – 바보가슴
Track 01 from Single "바보가슴 (Digital Single)"
Release Date: 2010.05.27
환희 – 내가 더 아플게 (가슴아파도 Part. 2)
Track 05 from EP "H-hour"
Release Date: 2010.08.05