Genres
- Avant-Garde
- Blues
- Children's
- Classical
- Comedy/Spoken
- Country
- Easy Listening
- Electronic
- Folk
- Holiday
- International
- Jazz
- Latin
- New Age
- Pop/Rock
- R&B
- Rap
- Reggae
- Religious
- Stage & Screen
- Vocal
- Heavy Metal
Ozzy Osbourne 88
Opeth 39
Overkill 48
Of Mice & Men 15
Orianthi 5
Obituary 24
Otherwise 8
Orgy 15
Otep 11
Orange Goblin 10
Oomph! 41
Onslaught 13
The Ocean 21
Outcast 4
Orphaned Land 10
Operation: Mindcrime 4
Obsession 7
Oh, Sleeper 5
Oz 14
Old Man's Child 8
Omnium Gatherum 12
One Day As A Lion
Ossian 16
On Thorns I Lay 9
OPM 2
October Falls 12
Omar Rodriguez-Lopez 11
October Tide 6
One Minute Silence 8
Orange 9mm 5
Oceans Of Slumber 5
Old Man Gloom 9
Onmyo-za 7
Obus 11
Overdose 10
O.N.A. 12
Opera Ix 6
Obey The Brave 5
One Man Army And The Undead Quartet 2
Ophthalamia 6
Odium 8
Opiate 2
Obtained Enslavement 4
Octavia Sperati 2
Opiate For The Masses 3
Open Hand 3
Obliveon 5
Ondskapt 4
OBSIDIAN 5
Oathbreaker 5
Oathean 7
Ocean Grove 5
Orthrelm
Overcast 2
OneSideZero 3
Obscure Infinity 4
Once Nothing 3
Opus Atlantica
Ov Hell
Oliva
Oblomov 4
Obsidian Gate 3
Opprobrium 5
Oratory
Outspoken 7
Outrun The Sunlight 5
On A Pale Horse
Oppressor 3
Otyg 5
One Machine 2
Orcustus 2
O.D
Octinomos 4
Ocrilim 3
October File 2
Old Lady Drivers
Outlaw Order
Obscurus Advocam 2
Okilly Dokilly 2
Obduktion 2
Ocean 3
Old Funeral 2
One-Way Mirror 4
Ohm:
Of The Son
Order Of Ennead 2
Order Of The Ebon Hand
Oozing Wound 4
Oneside 3
Obtest 5
Omar Rodriguez Lopez 2
Obrero 2
Overmars 2
Odd Project 2
ORI
Orcus
Ofermod 2
Old Wainds
Overtorture 2
— Artist has been update in past 30 days- Artist 3— Artist has more than two albums