- O
- OO
- OO
- OO
- OOak
- OakObe
- ObeObs
- ObsOcc
- OCDOce
- OceOct
- OCTOdd
- OddODE
- ODEOdu
- OduOfe
- OfeOff
- OffOge
- OgeOh
- OhOhm
- OHMOja
- OjaOKA
- OKAOku
- OkuOla
- OlaOld
- OldOle
- OleOli
- OliOli
- OliOls
- OlsOma
- OmaOme
- OmeOmn
- OmnO
- OOne
- OneOne
- OneOne
- OneOni
- OniOno
- Onooof
- OogOpa
- OpaOpe
- OpeOpu
- OpuOra
- OraOrb
- OrbOrc
- OrcOre
- OreOrh
- OriOri
- OriOrl
- OrlOrp
- OrpOrq
- OrqOrt
- OrtOsa
- OsaOsc
- OscOsl
- OslOST
- Ostoth
- OthOts
- OtsOtt
- OttOur
- OurOut
- OutOut
- OutOut
- OutOve
- OveOvi
- OviOwe
- OweOxf
- OxfOza
- Ozu
- Ozuozz
- Ori (folktronica singer songwriter Ori Alboher)
- Ori, Viktor
- Oria (Progressive Groove Metal, Thessaloniki, Central Macedonia)
- Oriach, Riccie (Tropical artist from the dominican republic)
- Oriain, Charlie
- Oriakhi, Davina
- Orialus
- Oriana (Argentine model, actress and singer)
- Oriana Nash (American singer-songwriter, Oriana Isabel Nash)
- Orianthi
- Orianthi & Bonamassa, Joe
- Óriás
- Oribasi, Lisa (Swiss singer‐songwriter)
- Oribu
- Orician (Trance and progressive house producer)
- ORIE.
- Oriel, Jonathan
- Orielles, The
- Orient Expressions
- Orient Expressions feat. Aynur
- Orient Fall (modern progmetal band)
- Orient Pearl
- Oriental Sunshine
- Orientales, Les
- Oriente (Rap group)
- Oriente, Cynthia Luz & Delacruz
- Orig. Alpenland Quintett
- ORIGA (Russian singer active in Japan)
- Origami Angel
- Origami Button
- Origami Phase
- Origami Tsunami (Alternative band from Manchester)
- Origamibiro
- Origen
- Origene
- Origin (Kansas metal band)
- Origin, The
- Originais do Samba, Os
- Originais do Samba, Os & Xis
- Original 3
- Original 7ven, The (formerly 'The Time')
- Original Alpenland Quintett
- Original Arzgebirgsche Randfichten
- Original Broadway Cast
- Original Broadway Cast
- Original Broadway Cast
- Original Broadway Cast
- Original Broadway Cast of Girl From the North Country
- Original Broadway Cast of Hamilton
- Original Broadway Cast of The Great Gatsby - A New Musical
- Original Broadway Cast of The Notebook
- Original Cast (this is a real artist. DO NOT USE for musical soundtracks!)
- Original Cast (Original Theatre Cast)
- Original Cast of SpongeBob SquarePants, The New Musical
- Original Cast of Stereophonic & Butler, Will
- Original Cast Recording
- Original Caste, The (folk group)
- Original Charlie Parker Quintet
- Original Concept
- Original Crooks and Nannies, The
- Original de Manzanillo, la
- Original Deutschmacher, Die
- Original Dixieland Jazz Band
- Original Dutch Cast Of "Elisabeth"
- Original Egerländer Musikanten, Die
- Original Flavor ('90s US rap group)
- Original Gabber, The
- Original God
- Original God & LIL NARNIA
- Original Gros Bonnet
- Original Koffee (Jamaican reggae singer Mikayla Simpson AKA Koffee)
- Original Lead Singers of The Temptations, The
- Original London Cast
- Original London Cast of Girl From The north Country
- Original London Cast of Miss Saigon
- Original London Cast of Sister Act
- ORIGINAL LOVE
- Original Mirrors
- Original Motion Picture Soundtrack
- Original Naabtal Duo
- Original Pistols, The
- Original Rap Staff
- Original Rudeboys, The
- Original Sharks (Brooklyn Melodic Punk)
- Original Sin (UK drum and bass)
- Original Sinners
- Original Sins, The
- Original Südtiroler Spitzbuam
- Original Swimming Party
- Original Television Cast of Hairspray LIVE!
