- O
- OO
- OO
- OO
- OOaf
- OAFOaK
- OakOBE
- ObeObn
- OBO
- Oce
- OceOCS
- OCTOct
- OctOdd
- OddODE
- ODEOdo
- OdoOf
- OfOff
- OFFOfi
- OfiOgr
- OgrOh
- OhOHN
- OhnOiz
- OJOKA
- OkaOkm
- OKOOla
- OlaOld
- OldOld
- OldOle
- OleOli
- OliOli
- OLIOls
- OlsOma
- OmaOma
- Omaomg
- omgOmo
- OmoO
- OnaOne
- OneOne
- OneOne
- ONE
- OneOnl
- OnlONT
- ontOom
- OomOpe
- OpeOph
- OphOpt
- OpuOra
- OraOrb
- OrbOrc
- OrcOrc
- OrcOre
- OreOri
- OriOri
- OriOrk
- OrkOro
- OroOrq
- OrqOrs
- OrsOru
- OruOsb
- OsbOsc
- OscOSM
- OsmOst
- OstOte
- oteOtr
- OtrOtt
- OttOui
- OuiOus
- OusOut
- OutOut
- OutOut
- OutOve
- OveOVE
- OveOwe
- oweOwn
- OwnOxy
- Oxy
- OZZ
- ozzozz
- Orbison, Joy, Overmono & Kwengface
- Orbison, Joy, Overmono & Skiifall
- Orbison, Roy
- Orbison, Roy & Harris, Emmylou
- Orbison, Roy & lang, k.d.
- Orbison, Roy & Melson, Joe
- Orbison, Roy & Roses, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy and Teen Kings, The
- Orbison, Roy feat. Cash, Johnny, Lewis, Jerry Lee & Perkins, Carl
- Orbison, Roy feat. Harris, Emmylou
- Orbison, Roy feat. lang, k.d.
- Orbison, Roy with Cash, Johnny, Lewis, Jerry Lee and Perkins, Carl
- Orbison, Roy with Royal Philharmonic Orchestra
- Orbit (Boston‐based rock band)
- orbit (German indie pop)
- Orbit (Japanese-Korean Group)
- Orbit Culture (melodic death metal/groove metal)
- Orbit Service
- Orbit, William (English musician, composer and record producer)
- Orbit, William feat. Melua, Katie
- Orbit, William feat. Orton, Beth
- Orbit, William feat. Scattergood, Polly
- Orbita Wiru (Polish rock group)
- Orbital (UK techno group)
- Orbital (atmospheric black metal band from Canada)
- Orbital & Badalamenti, Angelo
- Orbital & Hammett, Kirk
- Orbital & Lady Leshurr
- Orbital & Sleaford Mods
- Orbital & Voorn, Joris
- Orbital Alignment (Progressive Death Metal from Nottingham, UK)
- Orbital feat. Hammett, Kirk
- Orbital feat. Hawking, Stephen
- Orbital feat. Lady Leshurr
- Orbital feat. Little Pest, The
- Orbital feat. Mediaeval Baebes
- Orbital feat. Mediaeval Baebes
- Orbital Junction (UK rock band)
- Orbital Resonance Dilemma (Chilean rock band)
- orbital voices
- Orbital, Sleaford Mods
- Orbiter (Stephen Walking & 7 Minutes Dead)
- Orbiter (indie rock band from Boston)
- Orbiting Human Circus
- Orbits (Norwegian band featuring members of Jaga Jazzist and Neon Ion)
- Orbits, The (1950s US doo-wop group from Hartford, CT)
- Orbits, The (a.k.a. The Laurels, 50s doo-wop)
- orbitt, Riku Matsushima, Timbre, the Carrier, Dari
- ORBO & The Longshots
- 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 (portuguese group)
- ORCA (The Metal Rock Summer Festival)
- Orca Eroticae
- ORCALAND
- OrcaMind
- Orcas
- Orchardist, The (Nashville folk band)
- Orchards (band from Brighton, UK)
- Orchards (Alternative metal band from Dallas, Texas)
- Orchester der Bayreuther Festspiele, Böhm, Karl
- Orchester der Bayreuther Festspiele, Krauss, Clemens
- Orchester der Deutschen Oper Berlin, Jochum, Eugen
- Orchester der Vereinigten Bühnen Wien
- Orchester der Wiener Volksoper
- Orchester der Wiener Volksoper, Kantschieder, Paul
- Orchester Gino Mariano
- Orchester Reto Parolari
- Orchester Werner Tauber
- Orchestra
- Orchestra (Hot Spot Orchestra)
- Orchestra (For Now), The (art rock/progressive rock group)
- Orchestra Alec Medina
- Orchestra Bagutti
- Orchestra Baobab (Senegalese Afro‐Cuban band)
- Orchestra Capri
- Orchestra Città di Ferrara
- Orchestra del Maggio Musicale Fiorentino, Serafin, Tullio
- Orchestra del Teatro alla Scala di Milano, Giulini, Carlo Maria
- Orchestra del Teatro alla Scala di Milano, Serafin, Tullio
- Orchestra del Teatro dell’Opera di Roma
- Orchestra dell’Accademia Nazionale di Santa Cecilia, Chung, Myung-Whun
- Orchestra dell’Accademia Nazionale di Santa Cecilia, Pappano, Antonio
- orchestra di Piazza Vittorio, L’
- Orchestra Fireluche
