All Artists

The Ocean

Experimental · Hardcore

The Ocean Between Us

Post Hardcore · Hardcore

The Ocelots

The October Game

Rock · Indie Rock

The Octopus Project

Indie · Electronic

The Offenders

Ska · Reggae

The Offspring

Rock · Punk Rock

The Ogretones

The Oh Hellos

The Ohmz

Ska · Reggae

The OK Social Club

Indie · Post-punk

The Old Dance School

Jazz · Folk

The Old Firm Casuals

Punk Rock · Punk

The Old Romantic Killer Band

Rock · Blues

The Old Youth

The Olllam

The Omnific

The Once

The One Hundred

The Ones

Dance · House

The Only Ones

Punk Rock · New Wave

The Ooks Of Hazzard

Folk · Indie

The Open Day Rotation

The Operation

Rock · Indie Rock

The Oppressed

The Orb

Electronica · Electronic

The Orbitsuns

Country · Rockabilly

The Orchestra

Rock · Pop

The Orchestra (For Now)

The Orchids

The Order of Israfel

Doom metal · Swedish

The Ordinary Boys

The Oreoh!s

The Organ Grinder

The Orielles

The Original Bucks Fizz

British