- O
- OO
- OO
- OOak
- OakObi
- ObiObs
- ObsOce
- OceOct
- OctOdd
- OddODE
- ODEOdy
- ODZOff
- OffOga
- OgaOh
- OhOht
- OhtOK
- OKOko
- OkoOLA
- OlaOld
- OldOli
- OliOli
- OliOls
- OlsOma
- OmaOmi
- OmiOn
- OnOne
- OneOne
- Oneone
- OneOnl
- OnlOob
- OodOpe
- OpeOpp
- OppOra
- OraOrb
- OrbOrd
- OrdOrg
- OrgOri
- OriOrl
- OrlOrq
- OrqOrt
- OrtOsa
- OsaOse
- OseOsp
- OspOte
- OteOtt
- OttOub
- OudOut
- OutOut
- OutOut
- OutOve
- OveOwe
- OweOws
- Owu
- OZZ
- Orbital feat. Hammett, Kirk
- Orbital feat. Hawking, Stephen
- Orbital feat. Lady Leshurr
- Orbital feat. Little Pest, The
- Orbital feat. Mediæval Bæbes
- Orbital feat. Mediæval Bæbes
- Orbital Junction (UK rock band)
- orbital voices
- Orbital, Sleaford Mods
- Orbiter (Stephen Walking & 7 Minutes Dead)
- ORBS
- Orbweavers, The (Melbourne Band)
- Orc (progressive metal band from Lansing, MI, USA)
- Orca (UK early 1990’s breakbeat production duo)
- Orca (Psychedelic trance artist)
- Orca Eroticae
- Orca Team
- Orcas
- Orchards (band from Brighton, UK)
- Orchards (Des Moines)
- Orchester der Deutschen Oper Berlin, Jochum, Eugen
- Orchester der Vereinigten Bühnen Wien
- Orchester der Wiener Volksoper, Kantschieder, Paul
- Orchester Gino Mariano
- Orchester Reto Parolari
- Orchester Werner Tauber
- Orchestra
- Orchestra (Hot Spot Orchestra)
- Orchestra (For Now), The
- 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
