| Originally by Jo Neale |
| Origins |
| Origo |
| Orihara Izaya |
| Orihime Inoue |
| OrikaNekoi |
| Orikasa Ai |
| Orikasa Fumiko |
| Oriko |
| Orinda Huta |
| Orine Aida |
| ORION |
| Orion Rigel Dommisse |
| Orion-Josef Alhazov |
| Orion's Reign |
| Orishas |
| Orito Shinji |
| Orjan Nilsen |
| Orjan Nilsen ft. Kate Louise Smith |
| Orjan Nilsen ft. Neev Kennedy |
| Orkes Irama Eka |
| Orkes Keroncong La Paloma |
| Orkes Rame Dendang |
| Orkestr Che |
| Orkhan .M music |
| Orkhan.M music |
| Orkhon |
| Orkidea |
| Orkiestra Dni Naszych |
| Orla Fallon |
| Orla Gartland |
| Orlando B |
| orlando contreras |
| Orlando Johnson |
| Orlando Morais |
| Orlando Seale and Samantha Barks |
| Orleans |
| ORLEE |
| Orlons |
| orlov |
| Orlowski Boys feat Missis Kukla |
| ORLY |
| OrM |
| ORM1 x 4acki |
| Ormonde |
| Ormwish |
| Ornatos Violeta |
| Ornella Vanoni |
| Ornella Vanoni, Vinicius de Moraes, Toquinho |
| Ornette Coleman |
| Oro |
| OROCHI |
| Oroku |
| Orpha |
| Orphanage |
| Orphaned Land |
| Orphaned Land - All Is One, 2013 |
| Orphans of Dusk |
| Orphen |
| Orpheus |
| Orpheus Omega |
| Orphx |
| Orplid |
| Orquesta Adolfo Carabelli |
| Orquesta Alfredo Gobbi- Carlos Yanel - 1957 |
| Orquesta Alfredo Gobbi- Tito Lando - 1957 |
| Orquesta Alfredo Gobbi- Tito Lando - 1958 |
| Orquesta Anibal Troilo |
| Orquesta Anibal Troilo - Francisco Fiorentino |
| Orquesta Aragon |
| Orquesta Carlos Di Sarli Alberto Podesta |
| Orquesta De Rodolfo Biagi |
| Orquesta De Tango Silencio |
| Orquesta Domingo Federico |
| Orquesta Guayacan |
| Orquesta Juan D'Arienzo canta Mario Bustos |
| Orquesta La Palabra |
| Orquesta Osvaldo Fresedo Roberto Ray |
| Orquesta Porfirio Diaz |
| Orquesta Rica feat. Samy Goz |
| Orquesta Tipica Victor |
| Orquesta Tipica Victor, canta Alberto Gomez |
| Orquesta Tipica Victor. |
| Orquestra da Terra |
| Orsa Lia |
| Orshed |
| Orson |
| Ortel |
| Orthodox Celts |
| Orthodox Church |
| Orthodox Holy Monday hymn |
| Orthodox Serbian Choir |
| Ortin Cam |
| Ortiq Otajonov |
| Ortodox Celts |
| Orton1698 |
| Orup |
| Orwell |
| Orxan |
| Orxan Babazade |
