BIG Naughty (서동현), GEMINI (제미나이), James King (제임스 킹), OHMINJI, Various Artists, 고영서, 고은정, 김경희, 남혜승, 박상희, 승관, 시온, 윤송, 이소영, 이수현, 이승윤, 전정훈, 전종혁, 조미라, 조한나, 진 – Feel Like a Million
Track 01 from Album '별들에게 물어봐 OST Special'
시온 – Life is Tricky
Track 01 from Single '별들에게 물어봐 OST Part.2'
LEW, 명호(8TURN), 민희 (CRAVITY), 시온, 오준석, 이도, 재윤(8TURN), 정승환, 태영 (CRAVITY), 혁, 형석, 환웅 – Framework
Track 02 from EP '로드 투 킹덤 : ACE OF ACE ACE BATTLE'
LEW, 명호(8TURN), 민희 (CRAVITY), 시온, 오준석, 이도, 재윤(8TURN), 정승환, 태영 (CRAVITY), 혁, 형석, 환웅 – Paradise
Track 01 from EP '로드 투 킹덤 : ACE OF ACE ACE BATTLE'
시온, 최병찬 (빅톤), 최유진 – 기다릴게, 그곳에서 (See U There)
Track 01 from Single 'UUU (CJ ENM 웹드라마) OST'
시온 – karōshi!
Track 04 from EP 'sociavoidance'
시온 – incognito!
Track 05 from EP 'sociavoidance'
시온 – moon!
Track 06 from EP 'sociavoidance'
시온 – expired!
Track 03 from EP 'sociavoidance'
시온 – (sociavoidance)
Track 01 from EP 'sociavoidance'
시온 – avoid!
Track 02 from EP 'sociavoidance'
시온 – 바람이 분다
Track 01 from Single "[THE 시즌즈 VolⅡ. 4] <악뮤의 오날오밤> ReːWake x 시온"
Release Date: 2023.10.07
시온 – 기억을 걷는 시간 (Feat. 10CM)
Track 01 from Single "첫 번째 '기억'"
Release Date: 2023.09.10
시온 – Grow and Fly
Track 01 from Single "Grow and Fly"
Release Date: 2023.03.31
시온 – Dirt Cheap
Track 05 from EP "LIVE"
Release Date: 2023.03.18
시온 – Knowledge Addict
Track 04 from EP "LIVE"
Release Date: 2023.03.18
시온 – Money Machine
Track 03 from EP "LIVE"
Release Date: 2023.03.18
시온 – Spaceships and Pilots
Track 02 from EP "LIVE"
Release Date: 2023.03.18
시온 – Flying Fish
Track 01 from EP "LIVE"
Release Date: 2023.03.18
시온 – Dirt Cheap
Track 01 from Single "Dirt Cheap"
Release Date: 2023.02.23
시온 – Flying Fish
Track 01 from Single "Flying Fish"
Release Date: 2023.01.25
시온 – Lie to me
Track 01 from Album "사장님을 잠금해제 OST"
Release Date: 2023.01.14
시온 – Lie to me
Track 01 from Single "사장님을 잠금해제 OST Part.1"
Release Date: 2022.12.15
비트썸원, 시온 – HYDE (Prod. 손유지)
Track 01 from Single "HYDE"
Release Date: 2022.09.28
시온 – 귀로
Track 05 from EP "싱포레스트2(이별)"
Release Date: 2022.09.24
시온 – Braindead
Track 01 from Single "Braindead"
Release Date: 2022.09.13
시온 – comedy
Track 04 from EP "love"
Release Date: 2022.07.23
시온 – hypocrite
Track 03 from EP "love"
Release Date: 2022.07.23