Band Name

	O.h.m.		metal
	O.L.D. (Old Lady Drivers)		metal
	Oathean		metal
	Obituary		metal
	Oblique		metal
	Obscurant		metal
	Ocean, The		metal
	Octavia Sperati		metal
	Of Graves and Gods		metal
	Of Infinity		metal
	Of Sound Mind		metal
	Ojeda, Eddie		metal
	Old Dead Tree, The		metal
	Old Man's Child		metal
	Omegalord		metal
	Omnium Gatherum		metal
	On Broken Wings		metal
	On The Outside		metal
	On The Rise		metal
	One Dead Three Wounded		metal
	One Man Army And The Undead Quartet		metal
	Onesidezero		metal
	Open Hand		metal
	Opeth		metal
	Opiate For The Masses		metal
	Opposition Party		metal
	Opprobrium		metal
	Opus Dai		metal
	Ordeal, The		metal
	Order By Chaos		metal
	Order Of The Ebon Hand		metal
	Orgy		metal
	Origin		metal
	Orphanage		metal
	Orphaned Land		metal
	Orthrelm		metal
	OSI		metal
	Osyrus		metal
	OTEP		metal
	Overkill		metal
	Overmars		metal
	Oxiplegatz		metal
	Ozzy Osbourne		metal

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