Obsession

Carnival Of Lies	10
Scarred For Life	9
Methods Of Madness	9
Order Of Chaos	9

Obsidian Tide

Pillars Of Creation	9
The Grand Crescendo	9

Obús

Prepárate

8

Ocean Of Grief

Pale Existence	9
Nightfall's Lament	8

Oceans Of Slumber

Oceans Of Slumber	8
The Banished Heart	7

October Tide

A Thin Shell	9
Rain Without End	8
The Cancer Pledge	7

Octoploid

Beyond The Aeons

6

Officium Triste

The Death Of Gaia	8
Mors Viri	7

Old Man's Child

Ill-Natured Spiritual Invasion	10
Revelation 666 - The Curse Of Damnation	10
The Pagan Prosperity	9
Born Of The Flickering	8
In Defiance Of Existence	7
Vermin	7
Slaves Of The World	7

Old Season

Archaic Creation

10

Olympos Mons

Conquistador	10
Medievil	10

Omen

Battle Cry	8
Warning Of Danger	8
Escape To Nowhere	7
Eternal Black Dawn	7

Omnerod

The Amensal Rise

7

Omnium Gatherum

The Redshift	9
New World Shadows	9
The Burning Cold	9
Spirits And August Light	8
Beyond	8
Years In Waste	7
Stuck Here On Snakes Way	7
Grey Heavens	7
Origin	7

Omnivortex

Circulate

8

Onslaught

Killing Peace	9
The Force	9
Power From Hell	9
VI	9
Generation Antichrist	9
Sounds Of Violence	8
In Search Of Sanity	7

Opera Magna

Poe

6

Opeth

The Roundhouse Tapes [Live]	10
The Roundhouse Tapes [DVD]	10
My Arms, Your Hearse	9
Still Life	9
Blackwater Park	9
Orchid	8
Deliverance	8
Damnation	8
Ghost Reveries	8
Morningrise	7
Watershed	7
Pale Communion	7
In Cauda Venenum	7
Heritage	6
Sorceress	6

Ophidian I

Desolate

8

Oranssi Pazuzu

Mestarin Kynsi	8
Kosmonument	7
Värähtelijä	7

Orbit Culture

Nija	10
Rasen	9
Descent	8
In Medias Res	7

Orden Ogan

Final Days	10
Ravenhead	9
Gunmen	9
Vale	7
Easton Hope	7
The Order Of Fear	7
To The End	6

Origin

Antithesis	8
Entity	8

Orphaned Land

Mabool: The Story Of The Three Sons Of Seven	10
El Norra Alila	9
The Never Ending Way Of ORwarriOR	9
All Is One	9
Unsung Prophets & Dead Messiahs	9
Sahara	8

Ossian

Ítéletnap	8
Titkos Ünnep	8
A Rock Katonái	7
Emberi Dolgok	7

Ostrogoth

Full Moon's Eyes [EP]	9
Ecstasy And Danger	8
Too Hot	8
Feelings Of Fury	8

Ouroboros

Glorification Of A Myth	10
Emanations	9

Overkill

Horrorscope	10
Ironbound	10