- OOORyu☆ (中原龙太郎)
- OceansurfDan Gibson's Solitudes
- Original Album SeriesDinah Washington (黛娜·华盛顿)
- On the Radio (Japanese Version)小柳ゆき (小柳由纪)
- O'kay日之内绘美 (日之内エミ)
- Original Album SeriesThe Pogues
- Out Of The Box (Mini Album)Jade Valerie (杰德·瓦莱丽)
- Out of the BoxJade Valerie (杰德·瓦莱丽)
- Original Album Series (Explicit)The Pogues
- Ocean Surf: Timeless and SublimeDan Gibson's Solitudes
- O What A Beautiful CityJoan Baez (琼·贝兹)
- On My WayAxwell
- OrchestraWorakls
- OLIVE松任谷由実 (まつとうや ゆみ)
- O Holy NightLauren Alaina (劳伦 阿莱娜)
- Orchestra (Remixes)Worakls
- On StageLoggins & Messina (洛金斯与墨西拿)
- Otsegolectric (Internet Single)Static-X
- Out of the Old (From "High School Musical: The Musical: The Series") (歌舞青春：音乐剧集 电视剧原声带)Olivia Rodrigo
- One Woman ArmyPorcelain Black (Alaina Marie Beaton)
- old revelationKENN
- 달려라 장미 O.S.T Part.4 (奔跑吧玫瑰 O.S.T Part.4)은가은 (殷嘉恩)
- On My OneJake Bugg (杰克·巴格)
- 엄마 OST - Part.2 (妈妈 OST - Part.2|Mother OST - Part.2)은가은 (殷嘉恩)
- 불어라 미풍아 OST Part.12 (吹吧，微风啊 OST Part.12|Blown with the beautiful wind OST Part.12)은가은 (殷嘉恩)
- On s'en foutJohn Mamann (约翰·马曼)
- 불어라 미풍아 (Original Television Soundtrack) , Pt. 12은가은 (殷嘉恩)
- 러블리 호러블리 OST Part.6 (Lovely Horribly OST Part.6)은가은 (殷嘉恩)
- 미워도 사랑해 OST Part.23 (即使恨也爱你 OST Part.23)은가은 (殷嘉恩)
- 인형의 집 OST Part 3 (玩偶之家 OST Part.3)은가은 (殷嘉恩)
- 도둑놈 도둑님 OST Part.5 (小偷家伙 小偷大人 OST Part.5)은가은 (殷嘉恩)
- OdysseyYB (尹道贤乐队)
- 직장의 신 OST Part.5 (职场之神 OST Part.5)신지수 (申智秀)
- 최강럭비: 죽거나 승리하거나 OST from the Netflix Series (Rugged Rugby: Conquer or Die (Soundtrack from the Netflix Series))YB (尹道贤乐队)
- 에픽세븐 OST ′Invincible′ (EPIC SEVEN OST 'Invincible')YB (尹道贤乐队)
- 구필수는 없다 OST Part 1 (Never give up OST Part 1)YB (尹道贤乐队)
- ONE PIECE ワンピースキャラクターソロシングル Every-one Peace! ースキャラクターソロシングル Every-one Peace! (海贼王 角色Solo单曲 Every-one Peace!)田中真弓
- 메디컬탑팀 OST Part.1 (医学团队 OST Part.1|Medical Top Team OST Part.1)존 박 (John Park)
- 프로보노 (Original Television Soundtrack) , Pt. 3 (公益律师 OST Part.3)존 박 (John Park)
- 바벨 OST Part.4 (通天塔 OST Part.4)존 박 (John Park)
- OAO何文锐
- 기상청 사람들 : 사내연애 잔혹사 편 OST Part.5 (气象厅的人们：社内恋爱残酷史篇 OST Part.5)존 박 (John Park)
- outbox존 박 (John Park)
- Our EyesLucy Rose
- One up!!!/ 苺牛乳アイドリング!!!
- 유미의 세포들 OST Part 2 (柔美的细胞君 OST Part 2)존 박 (John Park)
- 월간집 OST Part.4 (月刊家 OST Part.4)존 박 (John Park)
- 빈센조 OST Part 6 (VINCENZO OST Part 6)존 박 (John Park)
- 도시남녀의 사랑법 OST Part.2 (都市男女的爱情法 OST Part.2)존 박 (John Park)
- ONLY MONEYAltan
- One Up!!!/苺牛乳 <通常盤>アイドリング!!!
- One Up!!!/苺牛乳 <初回盤A>アイドリング!!!
- Over When It's OverLucy Rose
- ORIGIN (オリジン)MINMI (ミンミ)
- One Day (Original Mix)Antrux
- 착하지 않은 여자들 OST Part.3포스트맨 (Postmen)
- 빛나거나 미치거나 OST Part.3포스트맨 (Postmen)
- 대박 OST Part.3포스트맨 (Postmen)
- 내 마음이 들리니 OST Part.4 (Can you hear my heart OST Part.4)포스트맨 (Postmen)
- 화려한 유혹 (Original Television Soundtrack) , Pt. 1 (华丽的诱惑 OST - Part.1)포스트맨 (Postmen)
