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
Oakhelm
black metal, folk metal, pagan metal, viking metal
Oath To Vanquish
brutal death metal, death metal, grindcore, technical death metal
Oathbreaker
hardcore punk, metalcore
Obadiah Parker
singer-songwriter, folk
Oberhofer
electronic, indie pop
Obi Fernandez
reggae, ska, soul
Obie Trice
gangsta rap, hip hop, rap
Obiman
ambient, chillout, electronic, electronica
Obits
indie rock, post-punk, punk rock
Obituary
death metal, metal, thrash metal
OBK
electronic, electropop, synthpop
Oblivians
garage rock, punk blues
Oblivion Dust
j-rock, rock
Oblivion Machine
death metal, electronic, industrial death metal, industrial metal
Obojeni program
alternative rock, rock
Obscura
death metal, progressive death metal, progressive metal, technical death metal
Obscure Sphinx
post-metal, sludge metal
Obscurity
black metal, death metal, pagan metal, viking metal
Observer Drift
chillwave, dream pop, electronic, shoegaze
Obsidian Kingdom
black metal, progressive metal
Obszön Geschöpf
electro-industrial
Obtained Enslavement
black metal, melodic black metal, symphonic black metal
Obtenebris
black metal, death metal, melodic black metal, melodic death metal
Obús
hard rock, heavy metal
Obywatel G.C.
new wave, rock
Occult
black metal, death metal, thrash metal
Oceán
new romantic, new wave, synthpop
