- OnaGAYO
- OlmuyorGAYO
- Orchestral StoriesLaurent Dury
- Organic Cycles By Laurent DuryLaurent Dury
- Our StarletEsquivel
- Other World, Other Sounds (Music for Dancing, for Listening - For Your Pleasure)Esquivel
- Only Big HitsEsquivel
- Other Worlds Other SoundsEsquivel
- Off Key & TimeHarald Björk
- Orchestra Repetita 3: Creative & ContemporaryLaurent Dury
- Oh nana (feat. 松坊栗)ハイジ
- Oakie Boogie (Billboard Hot 100 - No. 23)Ella Mae Morse
- Out of the Tunnel's MouthSteve Hackett
- One Of Them NightsInduce
- OpenJulie Driscoll
- 구르믈 버서난 달처럼 OST - 상사몽韩智慧
- Oye Tu Si SuenaEl Micha
- Ocean of FrequencyJape
- Oricon EPFreakMe
- OpusD-Formation
- Oh OhRio Dela Duna
- OrangeD-Formation
- Ojos TapatiosJorge Negrete
- Old German Dance Hits - Alte Deutsche Tanzhits Lilian HarveyLilian Harvey
- O, Pennsyltucky!Mischief Brew
- O-IssaEnzo Avitabile
- Ores & MineralsMazes
- Ojala Que La Vida Me AlcanceLos Originales De San Juan
- OrozcoLeon Gieco
- Os Tumantes (Nosso Lado Brasileiro)Claudio Tuma
- 허삼관 OST (허삼관 (Original Motion Picture Soundtrack)) (许三观 O.S.T|许三观卖血记 O.S.T)Pudditorium
- Of My Mind (Edit)Pional
- 어느날 OST (One Day (Original Motion Picture Soundtrack)) (某一天 OST)Pudditorium
- 아주 특별한 손님 OST(Ad-Lib Night (Original Soundtrack))Pudditorium
- 나이트 크루징 OST(Night Cruising (Original Soundtrack)) (夜巡 OST)Pudditorium
- 멋진하루 OST [Deluxe Edition] (My Dear Enemy (Original Soundtrack) (Deluxe Edition)) (精彩的一天 OST)Pudditorium
- Octoberbaby (Explicit)Three
- one day (一天)101A
- Oye Mira QueLos Sobraos
- Oye Mira Que...!Los Sobraos
- Omaha Diner (Explicit)Bobby Previte
- 우리는 매일매일 OST Part.9 – 익숙한 거리에 남아서 (Before We Knew OST Part.9 – Still on the Familiar Street) (我们的每一天 OST Part.9)오후 (5Who)
- 비로소 우리가 알게 된 것은 (Only now we know)오후 (5Who)
- Orizuru大森真理子
- One Step Back, Two Steps ForwardKlangstabil
- Out Of The BlueChris Farlowe
- Out of TimeChris Farlowe
- OH!マイ・ガールTakeuchi Denki
- Off with Her HeadGhost Town (鬼镇乐团)
- Over the InfluenceSlaves On Dope
- Our HouseD-Unity
- Old Fashioned Love SongsThe Mike Sammes Singers
- Out of the Darkness (2013 Remastered Version)Billy Vera
- Orange Edition - Mozart: Piano Concerto No. 9, K. 271 & Fantasia, K. 475Leonard Hokanson
- Out of the AshesTravis Dillard
- OkerClouseau
- On Life; LivingVaux
- Our Beloved Revolutionary SweetheartCamper Van Beethoven
- Oceans - SingleJohan
- OlympiaGerardo Frisina
