- O
- OO
- OO
- OOak
- OakObi
- ObiObs
- ObsOce
- OceOct
- OctOdd
- OddOde
- OdeOef
- OehOff
- OffOgd
- OgdOh
- OhOi
- OiOk
- okOku
- OkuOld
- OldOld
- OldOli
- OliOli
- OliOls
- OlsOMB
- OMBOmn
- OmnO
- OnaOne
- OneOne
- OneOng
- OngOno
- OnoOom
- OomOpe
- OpeOpt
- optOra
- OraOrc
- OrcOrd
- OrdOrh
- OrhOri
- OriOrm
- OrmOrq
- OrqOrt
- OrtOsb
- OsbOsi
- OsiOst
- OstOth
- OthOtt
- OttOur
- OurOut
- OutOut
- OutOve
- OveOve
- OveOwe
- OweOxl
- OxlOzm
- OZMOZZ
- Orchester Gino Mariano
- Orchester Reto Parolari
- Orchester Werner Tauber
- Orchestra
- Orchestra (Hot Spot Orchestra)
- Orchestra Alec Medina
- Orchestra Bagutti
- Orchestra Baobab (Senegalese Afro‐Cuban band)
- Orchestra Capri
- Orchestra Città di Ferrara
- Orchestra del Teatro alla Scala di Milano, Serafin, Tullio
- Orchestra del Teatro dell’Opera di Roma
- orchestra di Piazza Vittorio, L’
- ORCHESTRA FUEGO
- Orchestra Harlow
- Orchestra Harlow & Miranda, Ismael
- Orchestra JB
- Orchestra Marrabenta Star de Moçambique
- Orchestra Marrabenta Star de Moçambique feat. Wazimbo
- Orchestra Morphine
- Orchestra Mozart
- Orchestra of Syrian Musicians, The
- Orchestra of the Mariinsky Theatre, Gergiev, Valery
- Orchestra of the Royal Opera House, Covent Garden
- Orchestra Rosichino (Grande Orchestra Rosichino)
- Orchestra Spettacolo Casadei
- Orchestra Super Mazembe
- Orchestra, Bert Kaempfert
- Orchestra, Big Time
- Orchestra, Bone Poets
- Orchestra, Chennai
- Orchestra, KIV
- Orchestra, Moka Efti (Music from the 20s)
- Orchestra, Puente, Tito's
- Orchestraccia
- Orchestral Manoeuvres in the Dark
- Orchestre de l’Opéra national de Paris, Prêtre, Georges
- Orchestre de l’Opéra national de Paris, Prêtre, Georges
- Orchestre de la Société des Concerts du Conservatoire, Cluytens, André
- Orchestre de la Société des concerts symphoniques de Paris, Leibowitz, René
- Orchestre de la Suisse Romande, Ansermet, Ernest
- Orchestre de la Suisse Romande, Ansermet, Ernest
- Orchestre de Paris, Karajan, Herbert von
- Orchestre Ducoin
- Orchestre International du Vetex (Belgian brassband)
- Orchestre National de Barbès
- Orchestre national du Capitole de Toulouse, Plasson, Michel
- Orchestre national du Capitole de Toulouse, Plasson, Michel
- Orchestre philharmonique de Paris, Cosma, Vladimir
- Orchestre Tout Puissant Marcel Duchamp
- Orchid (United States screamo band)
- Orchid (American doom metal group)
- Orchid (eldia associate)
- Orchid feat. Funk, Simply
- Orchid Mantis
- Orchid Mantis ft. sign crushes motorist
- Orchidelia
- Orchids, The (Sarah Records)
- Orchids, The (Kim Fowley managed group)
- Orcivus
- Orcus (Philadelphia)
- Orcustus (Norwegian black metal)
- Ord, Boris
- Ord, Maren
- ORDEM
- Orden Mundial
- Orden Ogan
- Orden Ogan feat. Frank Beck & Thompson, Ross
- Ordén, Janne
- Order (Norwegian Black Metal)
- Order From Chaos
- Order of Elijah, The (Joplin, MO)
- Order of Ennead
- Order of Israfel, The
- Order of the Ebon Hand (Greece / Black Metal)
- Order of the Fly, The
- Order of Týr
- Order of Voices
- Order, The (Hard 'n' Heavy, Switzerland)
- Order89 (Parisian darkwave trio)
- Ordge, Jimmy Arthur (Canada)
- Ordinaires, The (USA band)
- Ordinance (USA progressive death metal)
- Ordinarius
- Ordinary Boys, The
- Ordinary Elephant
- Ordinary People (New Jersey)
- Ordinary Surfers
- Ordinary Time
- Ordo Equilibrio
