Artists starting with O
- O C Supertones
- O Pioneers!!!
- O Rappa
- O Trio
- O Yuki Conjugate
- O'funk'illo
- O'Rosko Raricim
- O'Yaba
- O-shen
- O-t-x
- O-Town
- O-Zone
- O. Lamm
- O.A.R.
- O.C.
- O.K.
- O.lamm
- o.n.a.
- O.t.h.
- O.V. Wright
- Oakenfold
- Oakley Hall
- Oasis
- OB. One
- Obadiah Parker
- Obersoundz
- Obie Trice
- Obituary
- OBK
- Oblivians
- Ocean Colour Scene
- Oceanlab
- Oceansize
- Ocote Soul Sounds And Adrian Quesada
- Octave One
- Octet
- October
- October Fall
- October Tide
- Octoberman
- Octopus Project
- Odawas
- Odd Nordstoga
- Odd Nosdam
- Oddibe
- Oddisee
- Odds
- Odessi
- Odiorne
- Odium
- Odyssee
- Odyssey
- of Montreal
- Off
- Off by One
- Offer Nissim
- Offering
- Office
- Officer Negative
- Officinalchemike
- Offlaga Disco Pax
- Offset
- OFX
- OG Black
- Ogenki Clinic
- Oh Laura
- Oh No
- Oh No Ono
- Oh No! Oh My!
- Oh Susanna
- Oh! Penelope
- ohGr
- Ohio Players
- Ohm-G and Bruno
- Ohmega Watts
- Ohmna
- Ohn
- Ohrbooten
- Oi Polloi
- Oi-Va-Voi
- Oil 10
- Oingo Boingo
- Ojan Septet
- Ojos de Brujo
- OK Go
- OK! Ryos
- Okan Murat Öztürk
- Okay
- OKI
- Okino Shuntaro
- Okkervil River
- Okkyung Lee
- Okna Tsahan Zam
- OKUYATOS
- Ol Dirty Bastard
- Ol' Kainry
- Ola Podrida
- Olaf Henning
- Olav Basoski
- Olav Brekke Mathisen
- Oláh Ibolya
- Old 97s
- Old and In the Way
- Old Crow Medicine Show
- Old Man Gloom
- Old Mans Child
- Old Reliable
- Old Skool Junx
- Old Time Relijun
- Oldelaf and Monsieur D
- Oldelaf et Monsieur D.
- Ole Van Dansk
- Oleander
- Oleta Adams
- Olga Tañón
- Olive
- Oliver Cheatham
- Oliver Ho
- Oliver James
- Oliver Koletzki
- Oliver Lieb
- Oliver Moldan
- Oliver Mtukudzi
- Oliver N'goma
- Oliver Nelson
- Oliver Onions
- Oliver Sain
- Oliver Shanti
- Oliver Shanti and Friends
- Oliver Tuku Mtukudzi
- Olivia
- Olivia Byington
- Olivia Newton-John
- Olivia Ruiz
- Olivier Baumont
- Olivier Bernet
- Olivier Hutman
- Olivier Lambert
- Olivier Libaux
- Olivier Messiaen
- Olivier Temime
- Olli Banjo
- Ollie and Jerry
- Olu Dara
- Olympia
- Om
- Omar
- Omar A. Rodriguez-Lopez
- Omar Faruk Tekbilek
- Omar Pene and Super Diamono
- Omar Souleyman
- Omara Portuondo
- Omarion
- OMC
- Omega
- Omerta
- OMFO
- Omid 16B
- Omnia
- Omnimotion
- Omnium Gatherum
- OMR
- On Broken Wings
- On the House
- On The Might Of Princes
- Onda
- One Be Lo
- One Block Radius
- One Chance
- One Inch Punch
- One King Down
- One Man Army
- One Minute Silence
- One More Grain
- One Night Band
- One Night Only
- One Republic
- One Self
- One Shot
- One Small Step For Landmines
- One Star Hotel
- One Track Mind
- One Way
- One-T
- Oneida
- Oneiroid Psychosis
- Onelinedrawing
- OneRepublic
- OneUp Mushrooms
- Onionz and Master D
- Only Child
- Only Crime
- Onur Özer
- Onyx
- Oohlas
- OOIOO
- Ooklah The Moc
- OOMPH!
- Op:l Bastards
- Open
- Open Air
- Open Hand
- Opera IX
- Opera Magna
- Operation Ivy
- Operation Makeout
- Operator
- Operator Generator
- Operator Please
- Opeth
- Opgezwolle
- Ophidian and Tapage
- Opiate for the Masses
- OPM
- Oppenheimer
- Optiganally Yours
- Optimus Rhyme
- Opus
- Opus III
- Ora Mate
- Orakle
- Orange
- Orange 3
- Orange 9MM
- Orange and Lemons
- Orange Blossom
- Orange Goblin
- Orange Juice
- ORANGE RANGE
- Orange Street
- Oranger
- Oranges and Lemons
- Orbient
- Orbit Service
- Orbital
- Orchester Gunter Gollash
- Orchestra
- Orchestra Baobab
- Orchestra Ethiopia
- Orchestra Franco Bagutti
- Orchestral Manoeuvres in the Dark
- Orchestre Andalou d'Israël
- Orchestre de Paris' Soloists
- Orchestre National de Barbès
- Orchid
- Order From Chaos
- Order Of The Ebon Hand
- Ordo Rosarius Equilibrio
- Oreja
- Oren Ambarchi
- Orenda Fink
- Orgamilk
- Organic Audio
- Organika
- Organized Konfusion
- Orgy
- Orhan Olmez
- ORIGA
- Origami
- Origin
- Origin Unknown
- Original Broadway Cast
- Original Cast Recording
- Original Dixieland Jazz Band
- Original London Cast
- Original Mark Edwards
- Original Memphis Five
- Original Soundtrack
- Originals
- Orion Experience
- Orishas
- Orko
- Orkrist
- Orlandivo
- Orlando Andreucci
- Orlane
- Orleans
- Ornatos Violeta
- Ornella Vanoni
- Ornette Coleman
- Orosius
- Orphaned Land
- Orquesta Aragon
- Orquesta Plateria
- Orquesta Sublime
- ORS
- Orson
- Orthodox
- Ortin Cam
- Ortzroka
- Orwell
- Os Cariocas
- Os Garotos Do Rio
- Os Ipanemas
- Os Mutantes
- Os Paralamas do Sucesso
- Os Tubaroes
- Osamu Kubota
- Osanna
- Oscar
- Oscar Brown Jr.
- Oscar D'León
- Oscar Peterson
- Osdalgia
- Osha
- Oshen
- OSI
- Osibisa
- Osker
- Oslo
- Oslo Telescopic
- Osman Ismen
- Ossian
- OST
- Ost and Kjex
- Osticles
- Ostinato
- Osunlade
- Oswin Chin Behilia
- Osymyso
- Otaku
- Otep
- OTH
- Otis Redding
- Otis Taylor
- Otomo Yoshihide
- Otros Aires
- Ott
- Ottawan
- Ottetto Classico Italiano
- Ottmar Liebert
- Ottmar Liebert and Luna Negra
- Otto Ohm
- Ottodix
- Ougenweide
- Oum Kalsoum
- Oum Kalthoum
- Oumou Sangare
- Our Lady Peace
- Our Mercury
- Ouroboros
- Ours
- Out Hud
- Out Of Eden
- Out of Order
- Outcast
- Outcasts
- OuterSpace
- Outkast
- Outlandish
- Outlawz
- Outlines
- Outrage
- Outrageous Cherry
- Outsidaz
- Outside
- Outspoken
- Outwork
- Ov
- Oval
- Over It
- Over The Rhine
- Overdrums
- Overflow
- Overhead
- Overkill
- Overload
- Overseer
- Oversol
- Overstep
- Overstreet
- Overthrow
- Ovo
- Ovuca
- Owal/Emcedwa
- Owen
- Owls
- Owsley
- Ox
- Oxbow
- Oxes
- Oxford Collapse
- Oxia
- Oxide and Neutrino
- Oxiplegatz
- Oxley
- Oxmo Puccino
- Oxymore
- Oxymoron
- Oystein Sevag
- Oysterhead
- Oz
- Oz Fritz
- Ozark Henry
- Ozi
- Ozma
- Ozomatli
- Ozric Tentacles
- Ozzy Osbourne
