The Oh Hellos
indie folk, folk
The Okmoniks
garage rock, rock
The Old Ceremony
indie rock, rock
The Old Dance School
celtic, jazz, world music, folk
The Old Dead Tree
death metal, doom metal, gothic metal, metal, progressive metal
The Old Haunts
indie rock, surf rock
The Old Wind
doom metal, post-metal
The Olympics
funk, northern soul, pop, soul
The One AM Radio
electronic, indie pop, lo-fi
The One Hundred
electronic, electronica, metalcore, post-hardcore, rapcore
The One Up Downstairs
emo, math rock, post-rock
The OneUps
8-bit, jazz, video game music
The Ongoing Concept
electronic, metalcore, post-hardcore
The Only Ones
new wave, power pop, punk rock
The Open
indie rock, rock
The Open Mind
garage rock, psychedelic rock, rock
The Optic Nerve
garage rock, power pop
The Orange Alabaster Mushroom
acid rock, psychedelic rock, rock
The Orange Lights
britpop, indie pop, indie rock
The Orange Peels
indie pop, indie rock, power pop
The Oranges Band
indie pop, indie rock
The Orb
ambient, chillout, electronic, electronica, idm
The Order of the Fly
hardcore punk, horror punk
The Ordinary Boys
indie rock, rock, ska
The Organ
indie rock, post-punk
The Organ Beats
power pop, rock
The Organization
alternative metal, funk metal, heavy metal, metal, thrash metal
The Original Sins
garage rock, pop, rock
The Originals
motown, northern soul, soul
The Orioles
doo wop, oldies, rhythm and blues
THE ORPHANS
folk punk, punk rock, folk
The Orwells
garage rock, indie rock, lo-fi
The Osborne Brothers
bluegrass, classic country, country
The Oscillation
electronic, krautrock, psychedelic rock
The Osmonds
oldies, pop, rock
The Other
horror punk, punk rock
The Other Ones
jam band, new wave
