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