| - Overhead
- One Direction
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- Olivia Rodrigo
- Olly Murs
- Of Monsters and Men
- Oasis
- Owl City
- Orson
- Outshine
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- Ozzy Osbourne
- Ofdrykkja
- The Offspring
- Orka
- Oceans of Slumber
- Out of the Grey
- Oso Oso
- OutKast
- Obiat
- Orianthi
- OK Go
- Ofenbach
- Old Dominion
- Otis Redding
- The Orb featuring David Gilmour
- OMI
- Our New Orleans
- One Way
- Oh Wonder
- ODESZA
- Omarion
- One Night Only
- One Day as a Lion
- Old Crow Medicine Show
- Oshun
- Olafur Arnalds & Alice Sara Ott
- Obvurt
- Obituary
- O-Zone
- Orchestral Manoeuvres in the Dark
- Orville Peck
- Orchestra dell'Accademia Nazionale di Santa Cecilia, Antonio Pappano
- Oche
- Oren Ambarchi
- Outasight
- The Ordinary Boys
- O.A.R.
- Opeth
- Oscar Peterson
- O'Shea
- Onward
- Olafur Arnalds & Nils Frahm
- Orleans
- Olive
- Olivia Newton-John
- Orchestra of the Swan
- The Overtones
- Octarine Sky
- Okkervil River
- The Offering
- Olafur Arnalds
- Oliver Tree
- Other Lives
- Oscar and the Wolf
- The O'Jays
- Oh Land
- Offa Rex
- Ol' Dirty Bastard
- The Outfield
- Odyssey
- OMC
- The Orwells
- Obie Trice
- The Ozark Mountain Daredevils
- Omar Sosa & Seckou Keita
- Of Mice & Men
- Outlandish
- Our Lady Peace
- Orbital
- Ocean Colour Scene
- Owen Campbell
- Operation Ivy
- ORF Vienna Radio Symphony Orchestra & John Jeter
- Osmani Garcia
- Orbit Culture
- Owl John
- Ought
- Oingo Boingo
- Oh Sees
- O.R.K.
- Owen Pallett
- Outlaws
- Ocie Elliott
- The Orielles
- Odd Future
- The Oh Hellos
- Oran "Juice" Jones
- OceanLab
- Orgy
- Old Mrs. Bates
- The Orb
- Oleta Adams
- The Oscar Peterson Trio
- Otis Redding & Carla Thomas
- Offset
- Operation: Mindcrime
- Ola Kvernberg
- Oneohtrix Point Never
- Orla Gartland
- The Orchids
- Ofra Haza
- One Desire
- of Montreal
- Oonagh
- Old 97's
- Ozuna
- ONE OK ROCK
- The Only Ones
- Olivia Chaney
- Of Virtue
- One EskimO
- The Orange Peels
- Ohio Players
- The Otolith
- Otherwise
- Our Native Daughters
- Outfit
- Overkill
- Ozomatli
- Opera Diabolicus
- Orden Ogan
- Oumou Sangare
- Olli Schulz
- Oberhofer
- Onyx
- Obadiah Parker
- Orishas
- Ojos de Brujo
- Omar Apollo
- Oren Lavie
- Otis Taylor
- The Osmonds
- Oh Laura
- OSI
- Overland
- Our Hollow, Our Home
- Orange Juice
- The Olms
- Operator Please
- OnAir
- Open Mike Eagle
- Ophelie Gaillard & Pulcinella Orchestra
- Otis Rush
- Oliver Nelson
- Oleander
- Oddisee
- Origami Angel
- Orchestra Baobab
- Omnimotion
- Omar Dykes
- Ozone
- Omar Khorshid
- OFF!
- Oli Silk
- Otep
- Orange Goblin
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- Opossom
- Omnium Gatherum
- Ottmar Liebert
- Omni Trio
- Out of Eden
- OPM
- The Ocean Blue
- Oh Susanna
- Orlando Weeks
- Orquesta Akokan
- Obywatel G.C.
- Orpheus Nine
- Otis Kane
- Ona
- Oliver Koletzki
- Ocean Alley
- Overcoats
- Oliver
- Old Man Wizard
- Our Last Night
- Obscura
- Oi Va Voi
- Oh the Larceny
- O.C.
- Over the Rhine
- Oli Brown
- Ocean
- Osees
- Oxford Collapse
- One Be Lo
- ORANGE RANGE
- The Ocean
- Oliver Cheatham
- The Oak Ridge Boys
- Our Broken Garden
- Olivia Holt
- The Olympians
- Oceana
- Oscar
- Opus
- Oathbreaker
- One Dove
- Outlasted
- Odd Future Wolf Gang Kill Them All
- Operator
- Omni
- Olivia
- Out Of This World
- Oceansize
- Operus
- Omar Sosa
- OHMME
- Olivia Ruiz
- Objekt
- Ozric Tentacles
- Oscar Jerome
- Osibisa
- Otis Gibbs
- Olga Pashchenko
| - Oh No! Oh My!
- Om
- Owl Eyes
- Once Human
- One Self
- Onita Boone
- Ohrenfeindt
- Oysterhead
- Otis Grand
- Odie
- Olav Larsen & the Alabama Rodeo Stars
- Otis Stacks
- Oluwadoe
- Omar
- Opus III
- Olga Scheps
- Omer Klein
- Otta
- oOoOO
- OTR
- Ohtis
- Oh Pep!
- Odetta
- Ocean Grove
- Old Sea Brigade
- O.Children
- Orphaned Land
- Only Men Aloud
- The Outsiders
- One Way Ryde
- OCS
- Oregon
- Ottoman Turks
- Opal
- Old Man Jasper
- Oum Shatt
- Orchid
- Ola Gjeilo
- Our Darkest Days
- Oh My!
- Orquesta Del Tango De Buenos Aires
- Oomph!
- Oliver Heldens
- Oscar D'Leon
- Oneida
- The Original 7Ven
- Olof Arnalds
- The One Hundred
- Ornette Coleman
- Ornette
- Odyssice
- Oliver Schories
- Oh, Sleeper
- Oliver Huntemann
- Oceans Ate Alaska
- Ossuarium
- Oliver Wakeman with Steve Howe
- Otto Klemperer
- Omar & The Howlers
- Ott
- Olivia Broadfield
- Ovlov
- Otis Spann
- Old Salt Union
- Opie and Family
- Oneman
- One More Girl
- Organized Konfusion
- Orion's Reign
- Ou est le swimming pool
- Oscar Brown Jr.
- Omar Kent Dykes & Jimmie Vaughan
- Odette
- Oliver Mtukudzi
- Outer Spaces
- Ozark Henry
- Operators
- Oliva
- Oblivion Sun
- Owen
- Old & In the Way
- Oz Noy
- Os Mutantes
- Okay Kaya
- Orgone
- Ooh La La
- Oh No Ono
- Owel
- October Fall
- Otmar Suitner, Staatskapelle Berlin
- Orange Blue
- The Oath
- Ost & Kjex
- Obits
- Orrin Evans
- Optimo
- Owiny Sigoma Band
- Oranssi Pazuzu
- Origin
- Oboise
- Orba Squara
- Out Hud
- One True Pairing
- Ohm Guru
- Ohenry
- The Obsessed
- Onslaught
- Octavia Yearwood
- The Other Two
- Oysterband
- Off the Cross
- Off With Their Heads
- Oxia
- Otto Klemperer, Philharmonia Orchestra, Elisabeth Schwarzkopf
- Old and New Dreams
- The O'Reillys and The Paddyhats
- Okta Logue
- The Octopus Project
- Ohana Bam
- Ojerime
- Official Secrets Act
- Oesch's die Dritten
- Oh No Not Stereo
- Otzeki
- Oneness of Juju
- Omega Infinity
- Oxide & Neutrino
- Omnia
- O+S
- Opus 5
- Oakley Hall
- Obscure Infinity
- Octopus
- Ocote Soul Sounds & Adrian Quesada
- Ola Podrida
- Oblivians
- Obsequiae
- On An On
- Outlands
- Obliteration
- Odious Mortem
- The Organ
- Okilly Dokilly
- The Olivia Tremor Control
- Opium Warlords
- Omen
- Orlando Julius
- One Eleven Heavy
- The Orange Humble Band
- Orphaned Land & Amaseffer
- Outloud
- Omega
- October Falls
- Ookay
- Otros Aires
- Oliver Shanti
- The One AM Radio
- Outworld
- One Second Bridge
- O'Death
- Odetta Hartman
- Olivia O'Brien
- Ocote Soul Sounds
- Orquestra Was
- Opineismyname
- Orchestra del Teatro alla Scala di Milano & Claudio Abbado
- The Old Firm Casuals
- Ollabelle
- Ornella Vanoni
- One-Way Mirror
- Omar Rodriguez Lopez
- Olin & The Moon
- Oozing Wound
- Osukaru
- Old Man Markley
- Orchestre Poly-Rythmo
- Oscar Peterson, Ray Brown & Milt Jackson
- The Orchestra of Syrian Musicians
- Odds
- Orchester der Deutschen Oper Berlin, Giuseppe Sinopoli
- Octo Octa
- Ostura
- Olivia Lane
- The Other Half
- ONWE
- OperaBabes
- One Less Reason
- Odonis Odonis
- Or, The Whale
- Olden Yolk
- Off Road Minivan
- ONETWOTHREE
- Operatica
- Oddarrang
- Othello & The Pocket Change Band
- Orcas
- Old Man's Child
- Oforia
- Orenda Fink
- O
- Of Modern Architecture
- One to One
- The Old Ceremony
- Orion the Hunter
- Olu Dara
- Otis Clay
- Orange Blossom
- Oval
- On Thorns I Lay
- O'Donel Levy
- Odd Nosdam
- Osada Vida
- Overdrive
- Outlawz
- Oshima Brothers
- Owen Temple
- Ozma
- Otto Klemperer, New Philharmonia Orchestra
- Oka
- Olivia Nelson
- Oriol
- Opio
- Onyx Collective
- Old Canes
- Osiah
- October Project
- Oxbow
| - One Minute Silence
- O'Brother
- The Ornette Coleman Double Quartet
- Ormonde
- Outer Heaven
- Orang-Utan
- Osiris
- Only Crime
- Ogre
- The Organization
- Originoo Gunn Clappaz
- Olivia Jean
- One More Time
- OOIOO
- Orchestra and Chorus of the Royal Opera House, Covent Garden & Sir Georg Solti
- Outrage
- Orchestra and Chorus of the Welsh National Opera, Richard Bonynge
- Ophidian I
- Oni
- Old Man Gloom
- Organectomy
- Oresund Space Collective
- Organic Pulse Ensemble
- Outlaw Blood
- Osmo Ikonen
- oddCouple
- Oliver Shanti & Friends
- The Overseer
- Onetwo
- The Open
- Oded Tzur
- Ours
- The Other Tribe
- Ole Borud
- Old Haunts
- ohGr
- Obey The Brave
- Ouroboros
- Ola Szmidt
- Outline in Color
- Odawas
- One Without
- Omar Coleman
- October Tide
- OVERWERK
- Oceano
- Ohm-G
- Oxmo Puccino
- ONBC
- Olly Anna
- Omnihility
- October Country
- Osunlade
- Outrageous Cherry
- Oh No
- OTEO
- One House Worship
- Othello
- Orchestra of Spheres
- Omar S
- Over The Ocean
- Outshyne
- Ostrich
- Odium
- Only Child
- One Bad Son
- The Owls
- The Out Crowd
- The Ornette Coleman Trio
- Old Man River
- Orlik
- One for the Team
- Owane
- Owls
- Orange Sunshine
- Olusheyi Banjo
- Orchestra and Chorus of The Royal Opera House Covent Garden, Richard Bonynge
- Omar Rodriguez-Lopez
- Orchestra and Chorus of La Scala, Carlo Sabajno
- One Way Ride
- Onra
- Orchestre de l'Opera de Paris, Pierre Boulez
- The Order of Elijah
- One-Eyed Doll
- Odd Couple
- Oxford Circle
- Olga Kouklaki
- O'Hooley & Tidow
- Officers
- Ortolan
- Oophoi & Louisa John-Krol
- Olivia Pedroli
- Opprobrium
- Octavia Sperati
- Oedipus
- Orthodox Celts
- Otargos
- Ola Onabule
- Organic Grooves
- Osanna
- Orwell
- Otto Klemperer, Wiener Philharmoniker
- The Opposites
- Olympos Mons
- Omega Massif
- OHHMS
- Oophoi
- Omnizide
- Of Eyes That See
- Oxo 86
- Osamu Kitajima
- Old Funeral
- Onesidezero
- Old Man's Will
- Opgezwolle
- Ostrogoth
- On Fillmore
- Omar Codazzi
- Obelyskkh
- Orient Fall
- Overseer
- Outline
- Oakenshield
- Oliver Haidt
- Oureboros
- Olympia
- Onkel Tom Angelripper
- Oscar + Martin
- Orne
- Ohbijou
- Open Hand
- OuterSpace
- The O.C. Supertones
- Orup
- Old Time Relijun
- Organissimo
- Omega Lithium
- Odd Squad
- Original Flavor
- Okay City
- Olivier Le Goas Quartet
- O.B. Buchana
- One Ton
- Oceans Divide
- Okoume
- Os Pontos Negros
- One Man Army
- Oakalla
- Oslo Swan
- O'Ryan
- Ordog
- Opera IX
- The Oscillation
- Old Wives
- Olli Banjo
- Ofrin
- Oya
- Organix
- Oophoi & Tau Ceti
- Overdream
- Os Paralamas do Sucesso
- On a Pale Horse
- Ocha la Rocha
- Old Fire
- O Rappa
- On Watership Down
- Orange Range
- Omotai
- Otomo Yoshihide, Bill Laswell, Yoshigaki Yasuhiro
- Oblique Rain
- Overdose
- Officium Triste
- Okay
- Obscurity
- Oskar Linnros
- One Man Army & The Undead Quartet
- Os Golpes
- Odjbox
- Out Cold
- Oddjob
- Obfusc
- Overnight Lows
- onelinedrawing
- Oxmo Puccino & The Jazzbastards
- Oogee Wawa
- Oslo 13
- Odd Project
- Olin and the Moon
- Obi Fernandez
- Okera
- Odyssea
- Ondskapt
- Ocultan
- Onry Ozzborn
- Ott Lepland
- Oholics
- Outcast
- Of Machines
- Open the Skies
- Onkel Kankel
- Osten med Resten
- Orth
- The Operation
- Oliver Hart
- Ordo Funebris
- Otto
- Opensouls
- Our Subatomic Earth
- Order of Ennead
- Orcustus
- One Hundred Hurricanes
- Only Living Witness
- Ogris Debris
- The Original Sinners
- Onda Vaselina
- Omar Cunningham
- Ono Loco & Lil Toro
- The Overlords
- Ortel
- Oz
- Old Hundred
- Officer!
- One the Juggler
- Ole ohne Kohle
- Orange
- Odd Nordstoga
- O.C. & PF CUTTIN
- Outre-Tombe
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