Genres
- Avant-Garde
- Blues
- Children's
- Classical
- Comedy/Spoken
- Country
- Easy Listening
- Electronic
- Folk
- Holiday
- International
- Jazz
- Latin
- New Age
- Pop/Rock
- Alternative/Indie Rock
- Art-Rock/Experimental
- Dance
- Europop
- Folk/Country Rock
- Foreign Language Rock
- Hard Rock
- Heavy Metal
- Alternative Metal
- Black Metal
- British Metal
- Death Metal
- Doom Metal
- Goth Metal
- Grindcore
- Guitar Virtuoso
- Hair Metal
- Industrial Metal
- Neo-Classical Metal
- New Wave of British Heavy Metal
- Pop-Metal
- Power Metal
- Progressive Metal
- Punk Metal
- Rap-Metal
- Scandinavian Metal
- Sludge Metal
- Speed/Thrash Metal
- Stoner Metal
- Symphonic Black Metal
- Pop/Rock
- Psychedelic/Garage
- Punk/New Wave
- Rock & Roll/Roots
- Singer/Songwriter
- Soft Rock
- R&B
- Rap
- Reggae
- Religious
- Stage & Screen
- Vocal
Opeth 
Orden Ogan 
Orphaned Land 
OSI 
Operation: Mindcrime 
Obscura 
Omnium Gatherum 
Oceans Of Slumber 
Once Human 
Oranssi Pazuzu 
Open Hand 
Old
Ocean Grove 
Opus Atlantica
Oratory
O.L.D. 
Otyg 
Ohm:
Odes Of Ecstasy 
Order Of Ennead 
Opensight
— Artist has been update in past 30 days- Artist 3— Artist has more than two albums