- O
- OO
- OO
- OOak
- OakObe
- ObeObs
- ObsOce
- OceOct
- OctOdd
- OddODE
- ODEOdu
- ODVOff
- OffOG
- OGOh
- OHOhm
- OhmOjo
- OjoOki
- OkiOla
- OlaOld
- OldOle
- OleOli
- OliOlo
- OloOma
- OmaOme
- OmeON
- ONOne
- OneONE
- ONEOne
- OneOnl
- OnlOnu
- OnwOpa
- OpaOph
- OphOR
- OrOrb
- OrbOrc
- OrcOre
- OreOri
- OriOrk
- OrkOrp
- OrpOrs
- Orsory
- OrzOsc
- OscOsl
- OslOst
- OstOti
- OtiOtt
- OttOur
- OurOut
- OutOut
- OutOve
- OveOve
- OveOwe
- OweOxm
- OXOOzo
- OzoOZZ
- Orbakaitė, Kristina
- Orbans, The
- Orbison, Joy
- Orbison, Joy & Boddika
- Orbison, Joy w/ Sen, Léa
- Orbison, Roy
- Orbison, Roy & Harris, Emmylou
- Orbison, Roy & Lang, K.D.
- Orbison, Roy & Melson, Joe
- Orbison, Roy & Teen Kings, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy feat. Harris, Emmylou
- Orbison, Roy feat. Lang, K.D.
- Orbison, Roy with Cash, Johnny, Lewis, Jerry Lee and Perkins, Carl
- Orbit (Boston‐based rock band)
- orbit (German indie pop)
- Orbit Culture (melodic death metal/groove metal)
- Orbit Service
- Orbit, William (English musician, composer and record producer)
- Orbit, William feat. Orton, Beth
- Orbit, William feat. Scattergood, Polly
- Orbita Wiru (Polish rock group)
- Orbital (UK techno group)
- Orbital & Badalamenti, Angelo
- Orbital & Hammett, Kirk
- Orbital & Lady Leshurr
- Orbital & Sleaford Mods
- Orbital Alignment (Progressive Death Metal from Nottingham, UK)
- Orbital feat. Gray, David
- 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
