- Oscar Rabin
- O.68
- odd
- O'Kingdom
- Orchestre National De France
- Olivelawn
- Ookay
- O.G. Style
- ODEE
- OVG
- ObulKasim-Omar
- ok2222
- Orso
- OG Maco
- Orchestra of the Age of Enlightenment、Stephen Layton
- Ophelias
- Oliver Deutschmann
- On1ynn_
- Opium Taylor
- Otto Paul Riedel
- On Borrowed Time
- Olly James
- Oscar G y su Grupo Sol
- Olivia O'Brien
- Oh God, This Is Plague Of War
- Orthotonics
- Officer Negative
- One Dead Three Wounded
- Ojivolta
- Olivier Manchon
- Oh Dam Ryul nongmill kim
- Ozark Henry
- Odd Moon
- On Wave
- Orquesta Estrellas Cubanas
- Organic Stereo
- Off With Their Heads
- Octave Mouret
- Omid
- O.B. Buchana
- OtravaMusic
- Oleg Kagan
- Order of Voices
- omniboi
- Obi Best
- Otway & Barrett
- ondi vil
- Old Solar
- Orchestre des Concerts Lamoureux
- Ottopasuuna
- Orchestra of the Opera Theatre
- Os Rosales
- Owusu & Hannibal
- Otto Waalkes
- Orquesta La Moderna Tradicion
- Of Mexican Descent
- one note
- Orquesta Aliamen
- Open City
- Orlando "Maraca" Valle
- Orouni
- Oliver Tree
- Olivia Sebastianelli
- One Family
- Oasis Praise
- Omodaka
- OUTER-TRIBE
- Otis Ball
- OLFAR & The Feral Pets
- Ohrca
- Overdrive Amp Explosion
- Ostwolf
- Oh Mercy
- Operation Re-Information
- Once A Barge
- O.E.
- Oro Y La Tequila
- Ocean Media
- One'sy Mack
- Orpheum Bell
- OuttaWave
- Olivia Block
- Olivia Escuyos
- Odair Assad
- Orphan Train
- Orchestre de l'Opéra Bastille
- Onalaska
- Orquesta Flamboyan
- 偶然
- OverTone
