Om
doom metal, stoner rock
Omar
acid jazz, funk, neo soul, soul
Omar & The Howlers
blues, classic rock, rock, southern rock
Omar Kent Dykes & Jimmie Vaughan
blues, country rock, southern rock
Omar Khorshid
psychedelic rock
Omar Pedrini
rock, soft rock
Omar Sosa
jazz, latin jazz, smooth jazz
Omar-S
deep house, house, techno
Omega
classic rock, hard rock, progressive rock, rock
Omega Lithium
gothic metal, industrial metal
Omega Massif
doom metal, post-metal, post-rock
Omega Tribe
anarcho punk, peace punk
Omen
heavy metal, metal, power metal
OMFO
electronic, electronica, folk
Omi
dance, electronic, reggae
Omni Trio
drum and bass, electronic, jungle
Omnia
celtic, neofolk, folk
Omnia & Ira
dance, electronic, electronica, progressive trance, trance
Omnitica
dubstep, electro house, electronic
on
ambient, hardcore punk, straight edge
On A Dead Machine
alternative rock, progressive rock
On An On
dream pop, indie pop, shoegaze
On The Last Day
emocore, post-hardcore, screamo
On The Might of Princes
emo, post-hardcore, screamo
On the Virg
jazz fusion, progressive metal, progressive rock
On Thorns I Lay
doom metal, gothic metal, metal
On-The-Go
britpop, indie rock
OnceOver
alternative metal, alternative rock, metal, metalcore, nu metal
Onda Vaselina
dance, latin pop
Ondřej Havelka
big band, jazz, swing
Ondskapt
black metal, metal
One Bad Pig
christian punk, christian rock, rock
