Genres
- Avant-Garde
- Blues
- Children's
- Classical
- Comedy/Spoken
- Country
- Easy Listening
- Electronic
- Folk
- International
- Jazz
- Latin
- New Age
- Pop/Rock
- R&B
- Rap
- Reggae
- Religious
- Stage & Screen
- Vocal
- Pop/Rock
One Direction 25
OneRepublic 49
Ozzy Osbourne 63
Oasis 48
Owl City 45
Olly Murs 15
Olivia Newton-John 47
Of Monsters And Men 9
Orchestral Manoeuvres In The Dark 34
Opeth 33
Old Crow Medicine Show 14
Overkill 47
Orbital 40
Outlaws 21
Orb 91
O.A.R. 20
Orleans 4
Old 97's 25
Of Mice & Men 14
Ozric Tentacles 50
Omarion 11
Oingo Boingo 33
Ozark Mountain Daredevils 5
Ocean Colour Scene 39
Orianthi 5
Our Lady Peace 14
OK GO 10
Obituary 24
Olafur Arnalds 19
Otherwise 6
Orgy 14
Omar & the Howlers 23
Okkervil River 16
Otep 10
Our Last Night 22
Ofra Haza 11
Oleta Adams 10
Odyssey 16
Of Montreal 24
Orange Goblin 9
Over The Rhine 24
Orange Juice 13
One Ok Rock 21
Ohio Express 4
Oysterband 10
Oriya
Omar 9
Onslaught 12
Oh Land 8
Omnia 15
Outasight 9
Outsiders 7
Outcast 4
Operation Ivy 5
Ozomatli 8
Orphaned Land 10
Orchid 9
Omen 10
The Ocean 18
Orden Ogan 9
Os Mutantes 16
One Night Only 4
Ottawan 10
Otto Knows 3
Other Lives 4
Obscura 6
Obsession 7
Oceansize 17
One Less Reason 7
Oh, Sleeper 4
Ornella Vanoni 19
OM 13
O-Town 3
Offer Nissim 10
Oceana 6
Oophoi 47
Oz 13
Old Man's Child 8
Oleander 4
Odin 10
One Tree Hill
Oliver Koletzki 14
Ought 3
Owen Pallett 5
Oscar And The Wolf 3
Osanna 11
Oval 9
Overland 6
Oblivians 8
O.C. 8
Odessa 4
Orion 17
OFF 2
One eskimO 2
Omnium Gatherum 10
One Day As A Lion
Orange Range 18
Octopus 8
Otis Gibbs 6
— Artist has been update in past 30 days- Artist 3— Artist has more than two albums