Nymphs
alternative rock, grunge, rock
O'Funk'illo
funk, funk metal, funk rock, rock
O-Zone
dance, eurodance, europop, pop
O.R.O.
dance, eurodance, pop rock, rock
O.T. Quartet
dance, electro, electronic
O.V. Wright
deep soul, rhythm and blues, soul, southern soul
Oak Pantheon
black metal, folk metal, post-metal
Obscura
death metal, progressive death metal, progressive metal, technical death metal
Ocean Colour Scene
britpop, indie rock, rock
Oceana
emocore, metalcore, post-hardcore, screamo
