| Roy Orbison - Oh, Pretty Woman (original single version) (mono) |
| Roy Orbison - Breaking Up Is Breaking My Heart |
| Roy Orbison - (All I Can Do Is) Dream You (Studio Demo) |
| Ayşe Hatun Önal - Kalbe Ben |
| Ayşe Hatun Önal - Yok Yok |
| Ayşe Hatun Önal - Aç Kapıyı |
| Ayşe Hatun Önal - Hayalimdeki |
| Ayşe Hatun Önal - Marslı |
| Ayşe Hatun Önal - Aslında |
| Ayşe Hatun Önal - Çatla |
| Ayşe Hatun Önal - Çeksene Elini |
| Oscarcito - Tu eres perfecta |
| Örsten - Fleur blanche |
| Orange 9MM - Can’t Decide |
| Orange 9MM - Fire in the Hole |
| Orange 9MM - 7 |
| Online - Le temps passe |
| Die Original Deutschmacher - Wenn Ich Komm' Rum |
| Die Original Deutschmacher - Schwitzen (A la La la La Lang) |
| Mark Olson - My One Book Philosophy |
| Original Alpenland Quintett - Frau Meier |
| Operadyse - Pandemonium |
| Graham Nash - I Miss You |
| Graham Nash - Myself at Last |
| Graham Nash - Cracks in the City |
| Graham Nash - Another Broken Heart |
| Graham Nash - Golden Days |
| Graham Nash - Encore |
| Christian Nodal - Adiós Amor |
| Novo Amor & Ed Tullett - Faux |
| Kent Odessa - Honeymoon |
| ORESKABAND - Tsumasaki |
| ORESKABAND - Jitensya |
| Os Atuais - Paloma Branca (Paloma Blanca) |
| Nosound - Someone Starts to Fade Away |
| Nosound - Idle End |
| Nosound - The Anger Song |
| One Man Army - Sleeper |
| Nosound - The Perfect Wife |
| Nosound - Love Is Forever |
| Justin Nozuka - Save Him |
| Justin Nozuka - If I Gave You My Life |
| Justin Nozuka - Why |
| Orquestra Contemporânea de Olinda - Canto da sereia |
| Johnny Orlando - Vxiixi |
| Johnny Orlando - See the World |
| Johnny Orlando - Right by Your Side |
| Johnny Orlando - You & I |
| Nichole Nordeman - Why? |
| OPM - Brighter Side |
| OPM - Better Daze |
| OPM - Rock Me Slow |
| OPM - Desire |
| OPM - Every Minute |
| One Be Lo - Used 2B Fly |
| One Be Lo - The Future |
| One Be Lo - The Host |
| Jorge Oñate - Nunca comprendi tu amor |
| The Original Pistols - No Feelings |
| Olsen Brothers - Fly on the Wings of Love |
| Olsen Brothers - Smuk Som Et Stjerneskud |
| Andrew Osenga - If I Had Wings... |
| Claude Nougaro - La pluie fait des claquettes |
| Claude Nougaro - Pacifique |
| One Minute Silence - The Price of the Kings Ticket |
| One Minute Silence - A Song About |
| One Minute Silence - If I Can Change |
| Claude Nougaro - Langue de bois |
| Claude Nougaro - Déjeuner sur l'herbe |
| One Star Story - This Game |
| Claude Nougaro - Chanson pour le maçon |
| One-T - I Woke Up |
| One-T - Kamasutra |
| Jeffrey Osborne - Greatest Love Affair |
| Original Flavor - Can I Get Open |
| Claude Nougaro - La Décharge |
| Claude Nougaro - Plume d'ange |
| Jeffrey Osborne - Stranger |
| Claude Nougaro - Marcia martienne |
| The Orb - Slug Dub |
| Claude Nougaro - À la mode |
| One Bad Pig - See Me Sweat |
| Mario Novembre - Only You |
| Los Olimareños - Isla Patrulla |
| Claude Nougaro - Autour de minuit - around midnight |
| Rie Tanaka - Voice of heart (On Air Ver.) |
| O'QueStrada - Oxalá te Veja |
| O'QueStrada - Creo (Cariño) |
| Orbit Culture - Svartport |
| Orbit Culture - Sun of All |
| Orbit Culture - Obsession |
| Orbit Culture - Rasen |
| Orbit Culture - The Haste to the Pyre |
| Orbit Culture - Wings of Dragons |
| Orbit Culture - The Umbilical Cord |
| Orbit Culture - Dawn of Light |
| Orbit Culture - Blacksphere |
| Orbit Culture - Automata |
| K.T. Oslin - Love Is Strange |
| K.T. Oslin - Miss The Mississippi And You |
| Omaha Bitch - The Slow |
| Omaha Bitch - Dancing Cyprine |
| K.T. Oslin - Wall of Tears |
| Opus Doria - The Mission |
| Michiru Oshima - Patema Inverse |
| Nevada - Feels Like Heaven |
| One-Way Mirror - Destination Device |
| One-Way Mirror - As You Are Now |
| One-Way Mirror - Empty Spaces |
| One-Way Mirror - Keeping Me Away |
| One-Way Mirror - Sockracer |
| Orxata Sound System - Semidéus |
| Ornob - Shobdo |
| Oriente - Máximo Respeito |
| Oriente - Hoje Eu Me Sinto Tão Bem |
| Oi Polloi - Unite and Win |
| Joan Osborne - Dracula Moon |
| Joan Osborne - One of Us |
| Joan Osborne - Lumina |
| Joan Osborne - Cream Dream |
| Ramón Orlando - Weo |
| Oi Polloi - Victims of a Gas Attack |
| Oi Polloi - Anti-Police Aggro |
| Joan Osborne - Sweeter Than the Rest |
| Joan Osborne - Dead Roses |
| Joan Osborne - I Don't Need No Doctor |
| Joan Osborne - What You Gonna Do |
| Claude Nougaro - Tu verras (O que sera a floor da terra) |
| Joan Osborne - What Becomes of the Brokenhearted |
| Ocean Colour Scene - Sing Children Sing |
| Ortiga - Danza la luna |
| Ortiga - Ilumbarada |
| Ocean Colour Scene - Get Blown Away |
| Ocean Colour Scene - Golden Gate Bridge |
| Ocean Colour Scene - I Love You |
| Oliveray - You Don’t Love |
| Ocean Colour Scene - How About You |
| Old Man Gloom - Gift |
| Kris Orlowski - Mountains |
| Ocean Colour Scene - Policeman & Pirates |
| Benjamin Orr - Too Hot to Stop |
| Benjamin Orr - Skyline |
| Benjamin Orr - This Time Around |
| Ocean Colour Scene - Day We Caught the Train |
| Bertín Osborne - Te quiero, te quiero |
| Tomek Organek - Mississippi w ogniu |
| Oliver Boyd and the Remembralls - Just a Hufflepuff |
| Beth Orton - She Cries Your Name |
| Beth Orton - Touch Me With Your Love |
| Beth Orton - Best Bit |
| Ostiaputa - La Rusa |
| Ostiaputa - Chupet Conection |
| Ostiaputa - En el reino de los cielos |
| Beth Orton - Moon |
| Oddział Zamknięty - Ten wasz świat |
| Osada Vida - I'm Not Afraid |
| Ocho Macho - jó nekem |
| Ocho Macho - viva cuba (english) |
| Jack O'Neill - Halfway Round the World |
| Nightstick - Pig in Shit |
| L'orso - Con i chilometri contro |
| L'orso - La meglio gioventù |
| L'orso - Festa di merda |
| Johnny Osbourne - Ice Cream Love |
| Oliver Onions - Springtime in Rome |
| Oliver Onions - Zorro Is Back |
| Oliver Onions - Freedom Rainbow |