Screaming guitar... machine gun drumming... flying hair... raw vocals... supercharged stadium crowds - these are the elements of the sound that came to be known as 'heavy metal.' Pioneers of metal are presented here in a series of searing, over-the-top live performances, reminding us of raw power that the hardest kinds of rock offered as early as the 1970's. The bracing, uncompromising primitivism of Ozzy Osbourne and Black Sabbath comes to life, who fatefully used the term 'heavy metal,' in their hit 'Born to be Wild,' deliver that song in hyper drive. Also including performances from Deep Purple, Thin Lizzy, Led Zeppelin and Iron Maiden. This program is an amazing series of performances - and a devastating rock explosion.