Ominous Eclipse

Death Technique - Canada

Omnipotence (CAN)

Death Black - Canada

Omnivide

Death Mélodique - Canada

On Fire

Speed Metal - Canada

Once In A Lifetime

Post Hardcore - Canada

Onchocerciasis Esophagogastroduodenoscopy

Death Brutal - Canada

One Bullet Resolution

Metal Alternatif - Canada

One Minute Shy

Heavy Thrash - Canada

Oni (CAN)

Metalcore - Canada

Ontôs On

Black Symphonique - Canada

Oozing Sockets

Porno Gore Grind - Canada

Opal In Sky

Metalcore - Canada

Open Eyes Elysia

Metal - Canada

Operation Winter Mist

Black Metal - Canada

Operus

Power Symphonique - Canada

Opferblut

Black Metal - Canada

Ophelia Falling

Metal Symphonique - Canada

Oppression (CAN)

Black Thrash - Canada

Oprichnik

Black Mélodique - Canada

Optics

Death Progressif - Canada

Opus Arise

Néo Classique - Canada

Opus Rex

Metal Progressif - Canada

Orasyon

Black Atmosphérique - Canada

Orbysse

Black Atmosphérique - Canada

Orchid's Curse

Metalcore - Canada

Orchidectomy

Death Brutal - Canada

Ord

Black Metal - Canada

Ordo Ab Chao

Dark Metal - Canada

Ordo Obscurantis

Death Grind - Canada

Ordoxe

Black Metal - Canada

Oriflamme (CAN)

Black Metal - Canada

Orn

Doom Sludge - Canada

Orphan (CAN)

Hard FM - Canada

Orphanofkos

Death Metal - Canada

Orphans In Coma

Death Grind - Canada

Orphique

Black Mélodique - Canada

Osiris (CAN)

Heavy Metal - Canada

Ossements

Black Ambient - Canada

Ossuaire (CAN)

Black Metal - Canada

Ossuary Vault

Black Doom - Canada

Ost Est Ima

Death Metal - Canada

Osyron

Metal Progressif - Canada

Othyrworld

Power Progressif - Canada

Oublieth

Dungeon Synth - Canada

Our Diabolical Embrace

Black Symphonique - Canada

Our Kingdom Crash

Hardcore - Canada

Our Lady Of Bloodshed

Death Metal - Canada

Our Lady Peace

Grunge - Canada

Our Mexican Butcher

Deathcore - Canada

Our Souls Evolve

Metalcore - Canada

Ouroboros (CAN)

Black Metal - Canada

Out Of Darkness (CAN)

Death Metal - Canada

Out Of My League

Metalcore - Canada

Out Of The Void

Doom Metal - Canada

Out Of Your Mouth

Hard Rock - Canada

Outlaws Of Ravenhurst

Heavy Metal - Canada

Outlying

Death Mélodique - Canada

Outrage (CAN-1)

Thrash Metal - Canada

Outrage (CAN-2)

Speed Thrash - Canada

Outrage AD

Thrash Death - Canada

Outre-Tombe

Death Metal - Canada

Ov Enochian

Black Metal - Canada

Ov Hollowness

Black Atmosphérique - Canada

Overbass

Thrash Metal - Canada

Overdrunk

Thrash Death - Canada

Overlord (CAN)

Power Metal - Canada

Overthrow (CAN)

Thrash Technique - Canada

Overwrought (CAN)

Black Atmosphérique - Canada

Ovif

Thrash Metal - Canada

OX (CAN)

Drone - Canada

Oxidized Faith

Death Progressif - Canada

Ozawar

Death Thrash - Canada

Pagan Flame

Black Pagan - Canada

Pagan Hellfire

Black Metal - Canada

Pagan Ritual

Black Pagan - Canada

Painter

Hard Rock - Canada

Paladin (CAN)

Doom Death - Canada

Pallor Mortis

Black Death - Canada

Palmistry

Doom Metal - Canada

Palms To The Sky

Metalcore - Canada

Pandaemonium (CAN)

Black Folklorique - Canada

Pandamonia

Heavy Metal - Canada

Pandora's Wake

Metal Progressif - Canada

Panic Field

Metal Industriel - Canada

Pansophic

Thrash Metal - Canada

Pantheon Omega

Black Death - Canada

Panzerfaust (CAN)

Black Metal - Canada

Panzerwar

Black Metal - Canada

Paradise (CAN)

Hard FM - Canada

Param-Nesia

Death Progressif - Canada

Paranoia (CAN)

Thrash Metal - Canada

Paranoia Church

Heavy Metal - Canada

Parapsychotic

Thrash Metal - Canada

Parasitic Infestation

Death Thrash - Canada

Paretic Dementia

Death Progressif - Canada

Parfumerie

Death Grind - Canada

Parhelion

Dark Ambient - Canada

Parlor Trixx

Hard Rock - Canada

Paroxsihzem

Death Metal - Canada

Paroxysm (CAN)

Death Metal - Canada