- Oleg Byonic feat. Alina Dream
- Orchestra Teatro Regio Torino
- Omari Lyseight
- Orchestre de Chambre de Lausanne
- Opéra royal de Wallonie
- Octan Soundsystem
- Ocean Haze
- Olivia Byington Y Orquesta Egrem
- Owl Valley Bluegrass Band
- OZON
- Omar Osorio Y Su Orquesta
- Omni Seven
- OlsoBane
- Oscar Gs
- Olinto Toscani
- Orquesta Picante
- OG John Gotti
- Opera Omnia
- OZYRYS
- Oscar Rocchi and his Electronics
- Ola Reistad
- Official UK Singles Chart
- O.S.
- Otg Chris
- Osmund Tobin
- OHYEAH ROCKET
- OGN1b
- one6one8
- Ogee Xeng
- Oujipig
- Otto@night
- Owen Bones
- OGSix
- ODOLA
- Oaku
- Old Peter
- OolgodKendo
- O2Jordan
- Opposite Ways
- Odds Are
- 欧晓涛i
- One Kiloton Sun
- Official Hospital Childbirth Collection
- oldmansky
- Onyeng
- Oliver Skye
- Orffee
- Open Smile Special
- occupant
- OneLamp
- Oblicua Tara
- Outternational Reggaemetal
- Osheen
- Oskie
- Oasis Music
- Oddwall
- Oppo Sanchezz
- Olivier Robin
- OnePixcel
- Og.Fitt
- Otiis
- Odd Dream
- ogw3xy
- Os Gaiteiros
- Octogennn
- 欧阳一钒
- Ohplai
- Orchestra and Nuns Chorus
- Octal Industries
- Onofre Torres
- Oliver Keller
- O S Arun
- One Ton Pig
- Orquesta La Cristalina
- Ogopogo
- OPTML
- Original Alpen-Casanovas
- Onométro
- O`Lee
- Orquesta Roy Luis
- Owlpemy
- onetaek
- Ohlan
- Oumar Konate
- ObOy Da Phantom
- Orchestre du Theatre des Champs-Elysees
- Ongkara
- OCS
- Ondaretro
- Ora.
