Metal Evolution is a 2011 documentary series directed by anthropologist as well as film-maker Sam Dunn and director, producer as well as songs manager Scot McFadyen about heavy metal subgenres, with brand-new episodes airing every Friday at 10pm EST on MuchMore as well as Saturday at 10pm EST on VH1 Classic. Its beginnings come from Dunn's initial documentary Metal: A Headbanger's Trip, which included the acclaimed "Heavy Metal Ancestral Tree."