- Of One
- Oscar Wills
- OnlyAce
- Onda Skillet
- OverTime
- Ohr Chodosh
- Outlaw Baby
- O.D.D.I.T.Y
- Owen Keith
- Ottomaton
- Oliver Dangendorf
- Oscar Ramírez y Su Grupo
- Oxime
- Orkidz
- Ole Maa
- Oldeaf
- OFFGOD
- Orlane Kaie
- Ordering Mints
- Oscillotter
- Ortrotasce
- Olympic Pool Maintenance League
- Ohad Peleg
- One Touch
- Oscar Escapa
- Orchester Wiener Akademie
- Oleas
- Owlscillate
- Oculus Aeternum
- OneManJamz
- Ohaln
- Option Ego
- Orion Kroah
- Odd Riddance
- OSSIEN
- Olaya Alcázar
- Occlusions
- OJ ManMan
- On the Radar
- Ogun Ferraille
- Orchestre Bella Bella
- On1 wAy
- Ocote Soul Sounds
- Osei Jenkins
- Osvaldo Hector Porrini Montes
- OJV
- Oberkampf
- Oliver Kaah
- Orbytal Real
- Ocean Youth Club
- OBizzleTon JohnSino
- Omo Frenchie
- Olivier Dartevelle
- Offiziell Epos
- Otto Mann
- OF6
- omokage
- Ogando
- Oliver Lake Quartet
- Oscar Avilés
- Opetra
- Orchestra and Chorus of The Opera House
- Ordo Ab Chao
- One Jaxx
- OG AliP
- Once Upon An Opera
- Original Lechschwaben
- OhAces
- Oliver Wolf
- OG Gee
- Odiggity
- Officiallynsreal
- One Like a Son
- oddkid
- ONE OF A KIND MUSIC
- Oxygen Thief
- Officially GP
- OgPurpin
- OneToFree
- Old Tracky Bastard
- Odion J
- Oniricos
- Ohrchitekt
- ocean in the end
- Omega Tron
- okolo
- Onat Önol
- OhDaFro
- Oscar Playuk
- Our Desire
