Nocturnal Depression

Near To The Stars [Demo]	4
The Cult Of Negation	4

Noein

Infection - Erasure - Replacement

7

Non Est Deus

Legacy

7

Non Opus Dei

Applied Diabology

6

Nordjevel

Nordjevel	7
Necrogenesis	7
Fenriir [EP]	6
Gnavhòl	6

Norther

Death Unlimited	7
Till Death Unites Us	7
Circle Regenerated	7
Mirror Of Madness	6
N	6

Northlane

Obsidian

7

Nortt

Galgenfrist

4

Noumena

Anatomy Of Life

5

Novembers Doom

Aphotic

6

Novembre

URSA

6

Nyktalgia

Peisithanatos

5

Oathbreaker

Rheia

7

Obscura

Akróasis	7
Diluvium	7
Retribution	6
Cosmogenesis	6
A Valediction	6

Obscurity

Várar	6
Tenkterra	6

Obsidian Gate

Whom The Fire Obeys

6

Obsidian Kingdom

A Year With No Summer

2

Obsidian Tongue

A Nest Of Ravens In The Throat Of Time

6

Obsidious

Iconic

7

Oceans

The Sun And The Cold	6
We Are Nøt Okay [EP]	6
Hell Is Where The Heart Is, Pt. III: Clarity [EP]	6
Hell Is Where The Heart Is	6
Hell Is Where The Heart Is Vol. I: Love And Her Embrace [EP]	5

Oceans Of Sadness

The Arrogance Of Ignorance	7
Mirror Palace	7
Send In The Clowns	7

Ofermod

Pentagrammaton	5
Tiamtü	4

Oh, Sleeper

Bloodied / Unbowed

7

Old Man's Child

Vermin	8
Revelation 666 - The Curse Of Damnation	7
In Defiance Of Existence	7
The Pagan Prosperity	6
Ill-Natured Spiritual Invasion	6
Slaves Of The World	6
Born Of The Flickering	5

Olhava

Reborn	8
Sacrifice	8
Ladoga	7
Olhava	7

Omega Infinity

Solar Spectre

6

Omnium Gatherum

New World Shadows	10
Beyond	9
Grey Heavens	8
The Burning Cold	7
Origin	7
Slasher [EP]	6

Once Human

Evolution	6
Scar Weaver	6
The Life I Remember	5

Ondfødt

Det Österbottniska M​ö​rkret

6

Ondskapt

Arisen From The Ashes

4

One Machine

The Final Cull	6
The Distortion Of Lies And The Overdriven Truth	5

One Man Army And The Undead Quartet

The Dark Epic...	7
Grim Tales	6

Onheil

Razor

6

Onirik

After Centuries Of Silence

4

Onirism

The Well Of Stars [EP]	7
Cosmic Dream	6

Opera IX

Anphisbena	7
The Black Opera: Symphoniae Mysteriorum In Laudem Tenebrarum	6
The Gospel	6

Opeth

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

Oracles

Miserycorde

7

Orakle

Tourments & Perdition

5

Oranssi Pazuzu

Värähtelijä

5

Orbit Culture

Nija	8
Rasen	7
Shaman [EP]	7

Orcustus

Orcustus

4

Order Of Orias

Ablaze

7