Nine Inch Nails

The Downward Spiral	7
The Fragile	7

Nine Treasures

Wisdom Eyes

8

Nocte Obducta

Nektar Teil II: Seen, Flüsse, Tagebücher	9
Galgendämmerung - Von Nebel, Blut Und Totgeburten	8
Nektar Teil I: Zwölf Monde, Eine Handvoll Träume	8

Nocturnus

The Key

9

Norma Jean

Polar Similar

7

Northlane

Discoveries

7

Nothingface

Skeletons	8
Violence	7

Noumena

Absence

8

Novembers Doom

The Pale Haunt Departure

8

Novembre

Classica	8
Novembrine Waltz	8

Num Skull

Ritually Abused

8

Numenorean

Adore	8
Home	7

Obituary

Slowly We Rot	8
Cause Of Death	8

Obscura

Cosmogenesis	8
Omnivium	8

Obscure Sphinx

Anaesthetic Inhalation Ritual	7
Void Mother	7

Obscurity

Tenkterra

8

Obsidian Gate

The Nightspectral Voyage

9

Obtest

Gyvybės Medis	8
Iš Kartos Į Kartą	7

Oceans Of Sadness

Mirror Palace	9
The Arrogance Of Ignorance	8

Oceansize

Frames	8
Effloresce	8
Everyone Into Position	7
Self Preserved While The Bodies Float Up	6

October Tide

Rain Without End

8

Officium Triste

Reason	8
Giving Yourself Away	7

Olympos Mons

Medievil

9

Om

Advaitic Songs	8
Conference Of The Birds	7
Pilgrimage	7
Variations On A Theme	7
God Is Good	7

Omb

SwineSong

9

Omega Massif

Geisterstadt	7
Karpatia	7

Omit

Repose

7

Omnium Gatherum

New World Shadows	8
Beyond	8

On Thorns I Lay

Threnos

8

Onmyo-Za

金剛九尾

7

Oomph!

Defekt	8
Wunschkind	7

Opera IX

The Black Opera: Symphoniae Mysteriorum In Laudem Tenebrarum

8

Opeth

Still Life	9
Blackwater Park	9
Ghost Reveries	9
Morningrise	8
Deliverance	8
Damnation	8
Watershed	8
The Last Will And Testament	8
Orchid	7
My Arms, Your Hearse	7
Pale Communion	7
In Cauda Venenum	7
Sorceress	6
Heritage	5

Ophelia

Sympathize With Your Phantasy

9

Orakle

Tourments & Perdition

8

Orange Goblin

Time Travelling Blues	8
A Eulogy For The Damned	8
Frequencies From Planet Ten	7
The Big Black	7

Orphaned Land

Mabool: The Story Of The Three Sons Of Seven	9
El Norra Alila	8
The Never Ending Way Of ORwarriOR	8
Sahara	7
All Is One	7
Unsung Prophets & Dead Messiahs	7
Kna'an [Collaboration]	5

Ortega

1634

8

OSI

Office Of Strategic Influence

8

Ostura

Ashes Of The Reborn	8
The Room	8

Otep

Sevas Tra	6
The God Slayer	2

Ou

One

6

Ouroboros

Glorification Of A Myth

8

Overkill

Ironbound	9
The Years Of Decay	8
Horrorscope	8

Ovid's Withering

Scryers Of The Ibis

8

Ozzy Osbourne

Blizzard Of Ozz	8
Diary Of A Madman	8
No More Tears	7

Pagan's Mind

Enigmatic : Calling	9
Celestial Entrance	8

Pain

Dancing With The Dead	7
Rebirth	7