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helloween
Korpiklaani is often thought to be the best folk metal band of all time.
"Iron Maiden are the best metal band and one of the best rock bands there has ever been" said by Lars Ulrich (Drummer of Metallica)
Moonspell
slipknot
Pantera!
Immortal Darkthrone
Children of bodom
Gold of course !
No the best band in the world is by far a day to remember
"WhiteChapel" or "as blood runs black"