장재인 – 우리 처음 만났던 날이 언젠줄 알아
Track 01 from Single 'Refresh project'
장재인 – 고마워요
Track 01 from Single "Thanks and Thank you"
Release Date: 2022.12.12
장재인 – 밥을 먹어요
Track 05 from EP "LIQUID"
Release Date: 2015.06.11
장재인 – 그댄 너무 알기 쉬운 남자야
Track 04 from EP "LIQUID"
Release Date: 2015.06.11
장재인 – 클라이막스
Track 03 from EP "LIQUID"
Release Date: 2015.06.11
장재인 – LIQUID
Track 02 from EP "LIQUID"
Release Date: 2015.06.11
장재인 – 나의 위성
Track 01 from EP "LIQUID"
Release Date: 2015.06.11
장재인 – Must have
Track 01 from Single "최강배달꾼 OST Part.1"
Release Date: 2017.08.05
조형우, 장재인 – Fine
Track 01 from Single "쇼핑왕 루이 OST Part.8"
Release Date: 2016.11.03
장재인 – Rainy Day (작은방 Ver.)
Track 05 from EP "여름밤"
Release Date: 2012.08.01
장재인 – Rainy Day
Track 03 from EP "여름밤"
Release Date: 2012.08.01
장재인 – Step
Track 02 from EP "여름밤"
Release Date: 2012.08.01
장재인 – 환청 (Feat. 나쑈 (NaShow))
Track 01 from Single "킬미힐미 OST Part.1"
Release Date: 2015.01.14
장재인 – 비밀낙원 (Secret Paradise)
Track 01 from Single "밤을 걷는 선비 OST Part.1"
Release Date: 2015.07.16