Obsecration

Death Metal

14 Albums

Ocean of Grief

Death-Doom Metal

3 Albums

Oh.

Progressive Metal

3 Albums

Okwaho

Metal

2 Albums

Omega Monolith

Sludge Metal

2 Albums

Once upon a winter

Post-Metal

4 Albums

On Thorns I Lay

Gothic Metal

11 Albums

Opened Paradise

Gothic Metal

4 Albums

Ophidian

Black Metal

1 Album

Order of the Ebon Hand

Black Metal

6 Albums

Orion’s Reign

Power Metal

4 Albums

Osculum Infame

Black Metal

1 Album

Path to Ixtab

Black Metal

1 Album

Penthos

Black Metal

2 Albums

Perfect Mess

Heavy Metal

1 Album

Phlebotomy

Doom Metal

1 Album

Plague

Death Metal

1 Album

Planet of Zeus

Stoner Metal

6 Albums

Poem

Alternative Metal

3 Albums

Progress of Inhumanity

Grindcore

2 Albums

Prometheus

Death Metal

6 Albums

Psycrence

Progressive Metal

1 Album

Rapture

Death Metal

6 Albums

Ravencult

Thrash Metal

4 Albums