- One Too Many MorningsKingston Trio
- Oh! Sad LuvGLee (글리)
- Oldies Selection: Make Way - Goin' PlacesKingston Trio
- O Lux Beatissima - A Treasury of Gregorian ChantCantores in Ecclesia
- Our Nantucket Wedding AlbumCape Cod Winds Ensemble
- On the Road: Love Selection (The Very Best Selection of Emotional Music)Saimore Khokham
- October SongsPenderecki String Quartet
- OrientationLebiDerya
- Oriental Jazz ImpressionsLebiDerya
- 심장이 뛰면 OST마정미 (马正美)
- 약장수 OST송준석 (宋俊硕)
- One Night / Need To KnowThieves Of Dreams
- ON THE BEACH (K22 extended)Jopon
- OmbreDomingo
- 황금주머니 OST Part.5 (黄金口袋 OST Part.5)성환 (成焕)
- 오! 사랑 빛나네 (Oh! 爱情闪耀着光芒)밤손님 (Burglar)
- OneOlivier Mellano
- Onelove Summer Festival Anthems 2013 (Mixed by Generik) [Explicit]GENERIK
- Onelove Digital Love (Mixed by Generik)GENERIK
- ObsidianHARIKIRI
- October Silence on a Sunday Morning PathHirotaka Shirotsubaki
- OKBellroseya (벨로즈야)
- Omen of SummerHirotaka Shirotsubaki
- OxanaIgneous Flame
- Our Way HomeSimone Gatto
- Ours For The TakingJacobs Ladder
- On A Chariot Of FireJacobs Ladder
- Out of the BlueCloverfield
- Only OneGilligan Moss
- Oase der Ruhe : Harmonisierende WohlfühlmusikVinito
- One Reason/Who Are You야반도주 (夜半逃走)
- Old Joe Clark (Revised Edition)Jill Trinka
- Organic KarmaKarmatronic
- Orbit (Live)The Wanderer
- OptimusKevin Call
- orinasu 〜小関佳宏作品集〜小関佳宏
- orinasu（映画「マダム・ソワ・セヴェンヌ」サウンドトラック）小関佳宏
- Olo Pio PolyBoys & Noise
- 와이즈캠프 웹드라마 왘캔두잇 오디션 (Original Television Soundtrack) (Wisecamp Webdrama Wak Can Do It Audition)헤일 (HAIL)
- Out The Window (Explicit)Youngboy Never Broke Again
- O ParaísoLudov
- O Exercício Das Pequenas CoisasLudov
- 별이 되어 빛나리 OST - Part.9 (星星闪烁 OST - Part.9)조봉선 (赵凤善)
- Organ ChargeSound Effect
- Origines contrôlées (Chansons de l'immigration algérienne)Mouss et Hakim
- Only (Radio Edit)Brabe
- Oh Dear! What Can the Matter Be?Michael Stairs
- One JumpCellos Balearica
- o:o:::o:o∞
- .:O.ö:ö.O:.∞
- Oussama Goes to the Theatre (Music from the Musical)Oussama Rahbani
- One Day, Spring Said To Me스트로벅스 (草莓巴克)
- o00000o∞
- o:°.o.°:o∞
- :O0O:∞
- O:°:O∞
- .:O.ö.O:.∞
- On the edge of a ruinsMurphy's Law
- Odds Are... (Original Motion Picture Soundtrack)Nicholas Pike
- OperateJohn Francis
