One Morning Left
electronic, electronica, post-hardcore, screamo
One Night Only
indie pop, indie rock
One Reason
folk punk, punk rock
One Republic
alternative rock, pop rock, rock
One Second Bridge
ambient, indietronica, post-rock, shoegaze
one sonic society
christian rock, contemporary christian
One Star Story
alternative rock, pop rock, rock
One Step Ahead
melodic hardcore
One Way Ride
grunge, hard rock, post-grunge, rock
One-T + Cool-T
dance, hip hop, pop, rap
Onelinedrawing
emo, singer-songwriter
OneRepublic
alternative rock, pop rock, rock
OneSideZero
alternative metal, alternative rock, hard rock, nu metal, rock
OneWorld
dance, electronic, electronica, progressive trance, trance
Onie Wheeler
country, rock and roll, rockabilly
Oniric
cabaret, dark cabaret, neofolk
Only Crime
hardcore punk, melodic hardcore, punk rock
Only Living Witness
hard rock, metal, metalcore, stoner rock
onoken
electronic, trance
Onslaught
heavy metal, metal, speed metal, thrash metal
Onyx
gangsta rap, hip hop, rap
Onyx Eyes
gothic metal, symphonic metal
Onze:20
pop rock, reggae, rock
Ooah
dubstep, electronic, glitch
Ooberman
britpop, indie pop
Ooklah the Moc
dub, reggae, roots reggae
Oomph!
industrial metal, metal, rock
oOoOO
chillwave, darkwave, electronic, witch house
Oorutaichi
avant-garde, electronic, house
