The O'Jays
The O'Kaysions
O-Town
O-Zone
O.A.R.
O.R.G.A.N.
The Oak Ridge Boys
Oasis
Obie Trice
Obsession
Ocean Colour Scene
Oceana
OceanLab
Oceanlab
The Odds
Odissi
Odyssey
Of Monsters And Men
Offer Nissim
The Offspring
Ofra Haza
Oh Snap!
Oh Well
Ohio Express
Ohio Players
Oingo Boingo
OJ Da Juiceman
OK Go
Ol' Dirty Bastard
Ola
Olav Basoski
Old Crow Medicine Show
Old School Junkies
Ole van Dansk
Olga
Olga Tanon
Olive
Oliver
Oliver Cheatham
Oliver Jones
Olivia
Olivia Newton-John
Olly Murs
Omara Portuondo
Omarion
OMC
Omni Trio
Omnia Tria
Ondina
One Bad Son
One Day As A Lion
One Direction
One Fingered Pocket
One Inch Punch
One More Angel
One More Girl
One Second 2 Late
One Ton
One Tribe
OnePhatDeeva
OneRepublic
The Ones
Onyx
Oojami
Ophelie Winter
Opus III
Oran 'Juice' Jones
The Orb
Orbit
Orbital
Orchestral Manoeuvres in the Dark
Orchestral World Groove
Orgy
Orianthi
Orient Expressions
Orientation
Origene
The Original
Original 3
The Originals
Orinoko
Orion
Orion Too
Oris Jay
Orleans
Orphies
The Osborne Brothers
Oscar Brown Jr.
Oscar D' Leon
Oscar G & Ralph Falcon
Oscar Gaetan
Oscar Peterson
Oskar Zenkert
The Osmonds
The Other Two
Otis Redding
Ottawan
Ottmar Liebert
Our Lady Peace
Outasight
Outatime
Outdare
The Outfield
The Outhere Brothers
OutKast
Outlaws
Outta Control
Outwork
Overground Werx
Owen Paul
Owl City
Oxygen
The Ozark Mountain Daredevils
Ozzy Osbourne