- 1 Origen
- 2 Otto Le Blanc
- 3 OZMA
- 4 Oasis
- 5 O.G.
- 6 Oliver Hart
- 7 Of Monsters And Men
- 8 Out Of Tune
- 9 Omnium Gatherum
- 10 Our Last Night
- 11 Oscar Peterson Trio
- 12 Oblomov
- 13 Oh Wonder
- 14 Outlandish
- 15 Orchestral Manoeuvres in the Dark
- 16 Orquestra Sinfônica Do Estado De São Paulo
- 17 One Love Family
- 18 oneBYone
- 19 Old Dominion
- 20 Otherwise
- 21 Ozomatli
- 22 OneRepublic
- 23 Our Lady Peace
- 24 Ophelia
- 25 Oceanlab
- 26 Outlawz
- 27 Oxymorrons
- 28 Os Morenos
- 29 Other Lives
- 30 Odd Future