환 – 됐어
Track 01 from Single "됐어"
Release Date: 2018.09.07
환, 구슬이 – 좋다, 싫다(Prod.Always KOALA)
Track 01 from Single "좋다, 싫다(Prod.Always KOALA)"
Release Date: 2019.02.15
환 – 결국엔 우리
Track 01 from Single "결국엔 우리"
Release Date: 2017.03.10
환 – 2빼기1 (Feat. 트리가 (Trigga))
Track 01 from Single "2빼기1"
Release Date: 2015.12.24
KOALA, 환 – 항상 니편이야
Track 01 from Single "항상 니편이야"
Release Date: 2014.12.26