- Of Stone, River and SongMelee (混战)
- 고려거란전쟁 OST Part.2 (Korea-Khitan War OST Part.2) (高丽契丹战争 OST Part.2)김장훈 (金长勋)
- 판도라 : 조작된 낙원 OST Part 1 (Pandora : Beneath the Paradise, Pt. 1 (Original Television Soundtrack))솔라 (颂乐)
- One Plus One김장훈 (金长勋)
- 킬힐 OST Part 4 (Kill Heel OST Part 4)솔라 (颂乐)
- 홍천기 OST Part.2 (红天机 OST Part.2)솔라 (颂乐)
- 빈센조 OST Part 3 (VINCENZO OST Part 3)솔라 (颂乐)
- Omega AliveEpica
- OM 1Medwyn Goodall (梅德温·古铎)
- OmegacousticEpica
- One Thing (Explicit)Lexy Panterra
- OmegaEpica
- 냄새를 보는 소녀 OST Part.6 (看见味道的少女 OST Part.6)스윗소로우 (Sweet Sorrow)
- OM 2Medwyn Goodall (梅德温·古铎)
- OriginsMedwyn Goodall (梅德温·古铎)
- Oktoberfest 2012: Drinking Party KaraokeUltimate Karaoke Stars
- Obligatory Bumbaclart tuneSum
- Oktoberfest Party 2012Ultimate Karaoke Stars
- Over Fly OverKathryn Williams (凯萨林·威廉斯)
- OSO慢慢说乐团
- Ocean DreamsDavid Arkenstone (戴维·阿肯斯通)
- Only Want YouSkylar Stecker
- O Holy Night (Live From Cherrytree Studios)Skylar Stecker
- Orionto Spangles豊崎愛生 (とよさき あき)
- Old Low Light (Remastered)Kathryn Williams (凯萨林·威廉斯)
- OPEN COLOR(限定版)(日本版)星井七瀬
- Only Want You (Acoustic Version)Skylar Stecker
- ONE SHOT WONDERKEYTALK
- Other WorldsReally Slow Motion
- OVERTONEKEYTALK
- Only One Life - The Songs Of Jimmy WebbMichael Feinstein
- OrionKEYTALK
- 실업급여 로맨스 OST - Part.2 (失业救助罗曼史 OST - Part.2)길미 (吉美)
- Of Mist and MagicReally Slow Motion
- 사악한 공작 영애의 우울 OST Part.5 (邪恶公爵千金的忧郁 OST Part.5)길미 (吉美)
- 영화 보이 OST Part.2 (电影男孩 OST Part.2)길미 (吉美)
- 여왕의 집 OST Part.9 (女王的家 OST Part.9)길미 (吉美)
- 미치도록 너만을 OST Part.9 (Crazily, Only You (Original Webtoon Soundtrack) , Pt. 9)길미 (吉美)
- 결혼하자 맹꽁아! OST Part.3 (结婚吧笨蛋啊! OST Part.3)길미 (吉美)
- 피도 눈물도 없이 (Original Television Soundtrack) , Pt. 12 (无血无泪 OST Part.12 )길미 (吉美)
- 끝까지 사랑 OST Part.18 (爱到最后 OST Part. 18)길미 (吉美)
- 무궁화 꽃이 피었습니다 OST Part.13 (木槿花开了 OST Part.13)길미 (吉美)
- One Time터보트로닉 (Turbotronic)
- OK터보트로닉 (Turbotronic)
- One More DreamSPEED
- On The Floor터보트로닉 (Turbotronic)
- On This Christmas NightB.J. THOMAS
- OasisRoberta Flack (罗伯特·弗兰克)
- 해운대 연인들 OST Part.1LED Apple (레드애플)
- One More Time터보트로닉 (Turbotronic)
- On StageB.J. THOMAS
- OpusEric Prydz
- Opus (Four Tet Remix)Eric Prydz
- 왕가네 식구들 OST Part 1 (王家一家人 OST Part 1|King`s Family OST Part 1)조항조 (曹行祖)
- 기분좋은날 OST Part. 4조항조 (曹行祖)
- Overlord (Extended)Midnight Conspiracy (午夜阴谋乐团)
- 불어라 미풍아 OST Part.6 (吹吧，微风啊 OST Part.6|Blown with the beautiful wind OST Part.6)조항조 (曹行祖)
- On My WayB.J. THOMAS
- 야차 OST Part.3 (夜叉 OST Part.3)주희 (李珠熙)
- 몬스터 OST - Part.4 (Monster OST - Part.4|怪物 OST - Part.4)주희 (李珠熙)
