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- OST-Hindi
- Ostad Elahi
- Ostara
- Ostbrut
- Osteoferocious
- OSTER project
- OSTER project feat. 初音ミク
- OSTER project feat. 巡音ルカ
- OSTER project feat.初音ミク
- Ostfront
- Ostfront Hate System
- Ostiaputa
- Ostinato
- Östro 430
- Ostzonensuppenwürfelmachenkrebs
- Osvaldo Ayala
- Osvaldo Berlingieri
- Osvaldo Fresedo
- Osvaldo Pugliese
- Osvaldo Pugliese Y Su Orquesta
- Oswald Sattler
- Oswald von Wolkenstein
- Oswaldinho do Acordeon
- Oswaldo Montenegro
- Oswenzim
- Osymyso
- Öszibarack
- OT 2008
- Ot Azoj Klezmer Band
- Otacílio Batista
- Otávio Augusto e Gabriel
- Oteil Burbridge
- Otem Rellik
- Otenki
- Otep
- Otesanek
- Otfried Preußler
- Othar Turner
- Othar Turner and The Rising Star Fife and Drum Band
- Othello (of Lightheaded)
- Other Day
- Other Men
- Other Side
- Otis Clay
- Otis Fodder
- Otis Redding
- Otis Rush
- Otis Taylor
- Otis Thompson
- Otis Waygood Blues Band
- Otis Williams
- Otklonenie
- Oto Efekt
- OTOHA
- Otomania feat. 初音ミク
- Otomo Yoshihide
- Otot
- Otouta
- Otprilike ovako
- Otra puse
- Otra Salida
- Otro Plano
- otsuka ai
- Ott
- Ottmar Liebert
- Otto
- Otto de la Rocha
- Otto Dix
- Otto Hertz
- Otto Klemperer
- Otto Luening and Vladimir Ussachevsky
- Otto Sander
- Otto von Schirach
- Otto Waalkes
- OttoOhm
- Ottorino Respighi
- Ou Est Le Swimming Pool
- Oudaden
- Ougenweide
- Ouija
- Ouija Radio
- Oum Kalthoum
- Oumou Sangaré
- Ounce Of Self
- Our Brother the Native
- our cause was just
- Our Flying Saucer
- Our Future Glory
- Our Haunted Kingdom
- Our Innocence Lost
- Our Krypton Son
- Our Lady Peace
- Our Last Night
- our lost infantry
- Our Man From Odessa
- Our Neighbor Barry
- our never ending life
- Our Subatomic Earth
- Ouran Koukou Host Bu
- Ours
- Ours To Destroy
- Ous Mal
- Out
- Out For Justice
- Out From Animals
- Out Hud
- Out of Channel
- Out of Eden
- Out of Ether
- Out of Focus
- out of misery
- Out Of My Flame
- Out of Order
- Out Of Ruin
- Out of the Afternoon
- Out of the Blue
- Outblast vs Korsakoff
- Outbreak
- Outeiro
- Outer Fringe
- Outer Sunset
- Outerhope
- Outersites
- OuterSpace
- OutKast
- OUTKAST featuring KHUJO GOODIE
- OutKast featuring T-Mo, Big Gipp and Khujo
- Outlander
- Outlandish
- Outlast
- Outlaw Blood
- Outlaw Heroes Standing
- Outlaw Order
- Outlaws
- Outlier
- Outlines
- Outlook
- outloud
- Outmatch
- Outo
- Outofchannel
- Outono em Marte
- OutPhase
- Outrage
- Outrageous Cherry
- Outshine
- OUTSIDE DAYS
- Outside Royalty
- Outsideinside
- Outsiders, The
- Outspoken
- Outwork feat. mr. gee
- OUTWORK Feat. MR.GEE
- OV7
- Ovadia Hamama
- Oval
- Ovários
- Ovary Lodge
- ove ingemarsson
- Ovelha
- Over It
- Over the Rhine
- Over The Trees
- Over The Wall
- Overcast
- Overclock
- Overcoming Trio
- OverDream
- OverDrive Division
- Overhang Party
- Overkill
- Overlap
- Overlife Inc.
- OVERLOAD.SK
- Overlord X
- OVERPAST
- Overproof Soundsystem
- OVERROCKET
- Overseer
- Oversight PL
- Overthrill
- Overthrow
- Overthruster
- OverUnity
- Ovidijus Jucys
- Ovidiu Lipan Tandarica
- OVO
- Ovuca
- owada
- Owen
- Owen Brannigan
- Owen Harris and the Saracens
- Owix
- Owl and Penny
- Owl City
- Owls
- Owsley
- Oxblood Reincarnations
- Oxbow
- OXES
- Oxes (rock-band)
- Oxford Collapse
- Oxidised Razor
- Oxley
- Oxmo Puccino
- Oxmo Puccino And The Jazzbastards
- oxo 86
- Oxr
- oxvac
- oxygen destroyer
- Oxygene
- Oxygenfad
- OxygenStar
- Oxymor
- Oxymoron
- Oya Bora
- oyaarss
- Oysterband
- Oz Alchemist
- Oz Bambaz
- Oz Noy
- OZAN trio
- Ozark Mountain Daredevils
- Özcan Türe
- Ozdemir Erdogan
- Ozéias de Paula
- Özer Atik
- Ozgun
- Özgür Çayan
- Özgür Kurum
- Ozi Batla
- Ozi meets Tom Mountain
- Oziris
- Özlem Tekin
- Ozma
- Ozmar Motta
- Ozols
- Ozomatli
- Ozone Layer
- Ozric Tentacles
- OZROSAURUS
- Oztronaut
- Ozymandias
- Ozzie Kotani
- ozzMium
- Ozzy Osbourne
- Òðîëëü ãíåò åëü
2tone avenue, miystique skillz, Paragon, The Ox and The Fury, Tam de Villiers Quartet, Poultry In Motion: The Hasil Adkins Chicken Collection, 1955-1999, The Fump Volume 14: March - April 2009, Boogiepop Phantom Original Soundtrack (disc 1), El Son De Adalberto Suena Cubano, Dance Into the Fire (disc 2), The Protestor, Босиком, L.S. Bumble Bee, Eyesdown (Warrior 1 Remix)
