- On and OnChasen
- On Your OwnThe Verve (神韵)
- OASIS Golden Best 제3집나훈아 (罗勋儿)
- One Club At A Time EPMidnight Red
- Our Moments歌莉雅
- Oh !Carol (1961)Neil Sedaka
- Ocean Dive 2Peter Jeremias
- One Way Ticket (To the Blues)Neil Sedaka
- Oh! Carol / One Way Ticket (To The Blues)Neil Sedaka
- Other LightsDustin O'Halloran
- One Way TicketNeil Sedaka
- 조선생존기 OST Part.4 (朝鲜生存记 OST Part.4)진호
- Only Gets BetterMaddi Jane (麦蒂 简)
- 온더캠퍼스 OST - Part.1 (ON THE CAMPUS OST - Part.1)진호
- 김비서가 왜 그럴까 OST Part.4진호
- Opus 18 (Silfur Version)Dustin O'Halloran
- One In A Million (International Version)Aaliyah (艾莉雅)
- 빅픽처 하우스 OST Part.3 (Big Picture House OST Part.3)진호
- Our WayFTampa
- One In A MillionAaliyah (艾莉雅)
- One In A Million (Remix)Aaliyah (艾莉雅)
- One Last Time (Remixes)FTampa
- One Last TimeFTampa
- One LifeHelena Paparizou
- OvercomeTricky (诡计合唱团)
- Off LimitsGlades
- OthersideBurak Yeter
- One WishDeborah Cox (戴伯拉·考克斯)
- Ouranio Toxo (MAD VMA 2018) (Ουράνιο Τόξο)Helena Paparizou
- Ouranio Toxo (Ουράνιο Τόξο)Helena Paparizou
- Otan Aggeli Klene (Angel)Helena Paparizou
- 미미 OST 최강창민 '슬픔 속에 그댈 지워야만 해' (Mnet 드라마) (MiMi OST 最强昌珉 '只能在悲伤中将你抹去')심창민 (沈昌珉)
- 전우치 O.S.T Part 2심창민 (沈昌珉)
- One More RoundMichael Mind Project
- OVA冬の蝉 オリジナルサウンドトラック (OVA动画《冬之蝉》原声带)平野義久 (ひらの よしひさ)
- One in a millionBosson (柏森)
- Over My HeadDavid Gray (大卫·格雷)
- One in a MillionBosson (柏森)
- Out LoudBOOM BOOM SATELLITES (ブンブンサテライツ)
- ONBOOM BOOM SATELLITES (ブンブンサテライツ)
- 몬스타 OST - Part.3 (Monstar OST - Part.3)하연수 (河妍秀)
- 사이 : 여우비 내리다 (Original Television Soundtrack)하연수 (河妍秀)
- 사이 : 여우비 내리다 OST하연수 (河妍秀)
- 이몽 OST Part.9 (异梦 OST Part.9)서대용 (Rich)
- 여름아 부탁해 (Original Television Soundtrack) , Pt. 10서대용 (Rich)
- 끝까지 사랑 OST Part.19 (爱到最后 OST Part.19)서대용 (Rich)
- 다섯손가락 OST Part.5The 포지션 (The Position)
- 야왕 OST Part.6 (野王 OST Part.6|Queen of ambition OST Part.6)The 포지션 (The Position)
- On The Road - New & BestThe 포지션 (The Position)
- 스캔들 OST Part.1The 포지션 (The Position)
- 대왕세종 OST Part.2 - 포지션The 포지션 (The Position)
- 공항 가는 길 OST Part.4 (通往机场的路 OST Part.4)선우정아 (鲜于贞雅)
- On My WayAnton Ewald
- Outside Looking In: The Best Of The Gin BlossomsGin Blossoms
- 찬란한 너의 계절에 OST Part.2 (In Your Radiant Season (Original Television Soundtrack) Pt. 2) (在你灿烂的季节 OST Part.2)선우정아 (鲜于贞雅)
- 더 킹 : 영원의 군주 OST Part 7 (The King : Eternal Monarch, Pt. 7 (Original Television Soundtrack))선우정아 (鲜于贞雅)
- 죄 많은 소녀 (Original Motion Picture Soundtrack) (After My Death (Original Motion Picture Soundtrack))선우정아 (鲜于贞雅)
- Opposites Attrack (Karaoke Version)Paula Abdul (宝拉·阿巴杜)
- 한입만 OST Part.3선우정아 (鲜于贞雅)
- 악귀 OST Part.4 (Revenant OST Part.4) (恶鬼 OST Part.4)선우정아 (鲜于贞雅)
