Obsidian Kingdom : Meat Machine

Black Avantgardiste

Obsidious : Iconic (Single)

Death Technique

Obsidious : Sense of Lust

Death Technique

Obsidious : Under Black Skies

Death Technique

Obsidious : Bound by Fire

Death Technique

Obsidious : Iconic

Death Technique

Obszön Geschöpf : Highway of Horrors

Metal Industriel

Oceans Of Slumber : Where Gods Fear to Speak (Single)

Death Progressif

Oceans Of Slumber : Poem of Fire

Death Progressif

Oceans Of Slumber : Where Gods Fear to Speak

Death Progressif

Oceans Of Slumber : Alone

Death Progressif

Octavia Sperati : Grace Submerged

Doom Gothique

Of Legends : Stranded

Hardcore

Ofö Am : Ofö Am

Stoner

Omega Infinity : Solar Spectre

Black Metal

Omega Infinity : The Anticurrent

Black Metal

Ommatidia : In This Life, or the Next

Dark Metal

Omophagia : In the Name of Chaos

Death Metal

On Thorns I Lay : On Thorns I Lay

Doom Gothique

Onesta : Back to Reality

Hardcore