명호(8TURN), 배인, 서호, 우빈 (CRAVITY), 은호 – CONTINUE
Track 01 from Single '로드 투 킹덤 : ACE OF ACE CONTINUE'
서호, 이도 – 얼음 땡!
Track 01 from Single '비밀은 없어 OST Part.1'
최아인, 서호 – 짜짜라짜짜짜
Track 01 from Single "짜짜라짜짜짜"
Release Date: 2020.03.14
정진철, 서호, 조범진 – 영웅이 나타났다 (티티체리 삽입곡)
Track 01 from Single "티티 체리 OST"
Release Date: 2021.12.28
서호, 블루오션 – 느낌적인 느낌
Track 03 from Album "비켜라 운명아 ORIGINAL SOUND TRACK"
Release Date: 2019.10.08
Ian Hug, 서호 – One Day It Will Be
Track 10 from Album "달리와 감자탕 OST Special"
Release Date: 2021.11.13
서호 – That’s Ordinary Love
Track 03 from Album "달리와 감자탕 OST Special"
Release Date: 2021.11.13
Ian Hug, 서호 – One Day It Will Be
Track 02 from EP "달리와 감자탕 OST Part.9"
Release Date: 2021.11.10
서호 – That’s Ordinary Love
Track 01 from Single "달리와 감자탕 OST Part.3"
Release Date: 2021.10.06