Omen

Battle Cry	9
Warning Of Danger	9
Nightmares [EP]	8
The Curse	8

Omen (HUN)

Feketében	10
Brutális Tangó	10
Anarchia	9
Jelek	9

Omnerod

The Amensal Rise

8

Omnium Gatherum

The Redshift	9
Grey Heavens	9
The Burning Cold	9
New World Shadows	8
Beyond	8
Origin	8

Onslaught

The Force	8
In Search Of Sanity	8
Power From Hell	7
Generation Antichrist	6

Onward

Evermoving	9
Reawaken	8

Oomph!

Defekt

8

Opera IX

The Black Opera: Symphoniae Mysteriorum In Laudem Tenebrarum

8

Opera Magna

Poe	9
El Ultimo Caballero	9
Del Amor Y Otros Demonios	9

Operation: Mindcrime

The Key	2
Resurrection	2
The New Reality	1

Opeth

Ghost Reveries	9
Morningrise	8
Deliverance	8
Heritage	8
Pale Communion	8
Sorceress	8
In Cauda Venenum	8
My Arms, Your Hearse	7
Still Life	7
Blackwater Park	7

Ophiuchi

Shibboleth

9

Ophthalamia

Via Dolorosa	9
Dominion	9
A Journey In Darkness	8
A Long Journey	8

Opprobrium

Discerning Forces

8

Oracle (USA-NCA)

Selah

8

Orange Goblin

Time Travelling Blues

9

Oranssi Pazuzu

Muukalainen Puhuu	9
Kosmonument	9
Valonielu	9
Värähtelijä	9
Mestarin Kynsi	9
Muuntautuja	8

Orbit Culture

Descent	9
Nija	8

Orden Ogan

To The End	9
Gunmen	9
Final Days	8
In The Dawn Of The AI [Single]	8

Original Sin

Sin Will Find You Out

8

Orion's Reign

Scores Of War

9

Orkrist

Reginae Mysterium

9

Orphaned Land

All Is One

6

OSI

Office Of Strategic Influence

9

Ossian

Ítéletnap	9
Titkos Ünnep	9
Árnyékból A Fénybe	9
Hangerőmű	9
Acélszív	8
Félre Az Útból!!!	8
A Rock Katonái	8

Ostrogoth

Too Hot	8
Feelings Of Fury	8

Ostura

The Room

9

Outer Heaven

Realms Of Eternal Decay

7

Outrage (JPN)

The Great Blue

8

Outre-Tombe

Nécrovortex

9

Outworld

Outworld

9

Overdose

Conscience	9
You're Really Big!	8
Addicted To Reality	8
Circus Of Death	8
Progress Of Decadence	8

Overdrive (UK)

Dishonest Words	8
On The Run [EP]	8

Overkill

Wrecking Everything [DVD]	10
Under The Influence	9
The Years Of Decay	9
Horrorscope	9
Ironbound	9
Scorched	9
Feel The Fire	8
Taking Over	8
Fuck You And Then Some [Compilation]	8
From The Underground And Below	8
Killbox 13	8
The Wings Of War	8
Bloodletting	7
Immortalis	7
The Grinding Wheel	7