Once And Future King - Part One

Rock
2003

Once I Saw A Ghost - Architects Demise

Metalcore
2013

Ondskapt - Arisen From The Ashes

Black Metal
2010

Ondskapt - Dödens Evangelium

Black Metal
2005

One Bullet Left - Armageddon Sunrise

Melodic Death Metal / Metalcore
2010

One Bullet Left - Invisible Fleshwounds (EP)

Melodic Death Metal / Metalcore
2006

One Man Army And The Undead Quartet - The Dark Epic

Death Thrash Metal
2011

One Man Army And The Undead Quartet - Grim Tales

Death Thrash Metal
2008

One Morning Left - The Bree-Teenz

Metalcore / Elektro
2011

One Without - Thoughts Of A Secluded Mind

Gothic Metal
2009

One-Way Mirror - One Way Mirror

Modern Metal
2008

Oneiros - Insania.Exanimis.Mortis

Dark Metal
2004

Onheil - Razor

Black Metal
2009

Onirophagus - Prehuman

Death Doom Metal
2013

Onkel Tom Angelripper - Nunc Est Bibendum

Metal
2011

Onset Cold - Onset Cold

Death Black Metal
2008

Onslaught - VI

Thrash Metal
2013

Onslaught - Sounds Of Violence

Thrash Metal
2011

Onslaught - Live Damnation (Live)

Thrash Metal
2009

Onslaught - Killing Peace

Thrash Metal
2007

Oomph! - Träumst Du (Single)

Rock
2007

Oomph! - Delikatessen (Compilation)

Rock / Elektro
2006

Oomph! - Gekreuzigt 2006 + The Power Of Love (Single) (EP)

Rock
2006

Oomph! - Die Schlinge (Single)

Elektro
2006

Oomph! - Das Letzte Streichholz (Single)

Elektro
2006

Oomph! - GlaubeLiebeTod

Rock / Elektro
2006

Oomph! - Gott Ist Ein Popstar (Single)

Elektro
2006

Open The Skies - Conspiracies

Emocore
2008

Operation Counterstrike - Composter Of Death

Death Thrash Metal
2004

Opeth - Pale Communion

Progressive Rock
2014

Opeth - Heritage

Progressive Rock
2011

Opeth - The Roundhouse Tapes (DVD)

Progressive Death Metal
2008

Opeth - Watershed

Progressive Death Metal
2008

Opeth - The Roundhouse Tapes

Progressive Death Metal
2007

Opeth - Ghost Reveries

Progressive Death Metal
2005

Opeth - Damnation (Re-Release)

Melancholic Metal
2003

Opeth - Deliverance (Re-Release)

Progressive Death Metal
2002

Opeth - Blackwater Park

Progressive Death Metal
2001

Ophidian - Suffering/Dreaming

Progressive Power Metal
2006

Ophiolatry - Transmutation

Death Metal
2008

Ophis - Stream Of Misery

Death Doom Metal
2007

Ophis - Nostrae Mortis Signaculum (EP)

Death Doom Metal
2004

Ophthalamia - Dominion (Re-Release)

Black Metal
2011

Ophydian - The Perfect Symbiosis

Modern Metal
2007

Opium Lord - Eye Of Earth

Sludge Metal
2015

Opposition Party - Zombified

Thrash Metal
2005

Orakle - Uni Aux Cimes

Progressive Black Metal
2005

Orange Goblin - A Eulogy For The Damned

Doom Metal / Stoner Rock
2012

Oranssi Pazuzu - Värähtelijä

Progressive Black Metal
2016

Oranssi Pazuzu - Valonielu

Progressive Black Metal
2013