- O2
- One T
- Old Man Shattered
- Omar Alhindi
- OSTON
- Orange Kush
- Orangestar
- OxFord
- One Leg Mary
- Outcrowd
- Originoo Gunn Clappaz
- Ohms
- Orchestre de Chambre Jean-François Paillard
- Outlett
- Opus 1
- Ottavio Dantone
- Oko
- Operator & Baffled
- Orlons
- Orphan Choir
- Ova!
- orange castle
- Of Cabbages & Kings
- Omega III
- Ouse ツ
- Orchestra del Teatro alla Scala di Milano
- Odelia
- Oliver Wallace
- Orpheus Chamber Orchestra
- ORDER$MUSIC
- Olivia Addams
- OGB
- Oscar Wylde
- Otter Berry
- Os Paralamas
- Otomania
- Oya Baby
- Oldominion
- Opafire
- October Rust
- Once We KIlled
- Omar Afuni
- Opus Däi
- oceanfromtheblue
- OVCOCO
- Olive
- Outernationalists
- On Bed Together
- Origami Ghosts
- Orchestra Jb
- Overdoes
- ODahl
- Ornella Puliti Santoliquido
- Orchester Der Deutschen Oper Berlin
- One Twelve
- Our Boys Steel Orchestra
- Oh, The Story!
- Orphan Project
- Oriel Poole
- Oink
- Original Broadway Cast
- Oscar Anton
- Omkarnath Thakur
- Oneside
- ODA
- Orchestre Symphonique de Montréal
- Orlando Maraca Valle
- Otto A. Totland
- Once Hush
- O.M.GAGA、Marina and the Diamonds
- Original Rockers
- Octagon Man
- Once11
- Olu Dara
- Off the Record
- Ojo de Buey
- Opolodo & Demetrius
- On Wings of Song
- Orchestra Sinfonica Italiana
- Orion Sun
- Old Joe Clarks
- Osho
- Oorora
- Old crab
- O-Zi
- SMD偶像天团
- Orchestre de Paris
- Old Sea Brigade
- Other Side
- 欧阳童童
