Black Sabbath well and truly put heavy metal on the map in 1970 with their self-titled album. From this moment, Tony Iommi’s snarling, overdriven tone, powerchord riffs, and hammer-on sequences paved the way for things to come.
Across the decades, Iommi’s rhythm guitar parts planted the seed for numerous metal subgenres – from the slow, doomy riffs of Into The Void, to the thrashier down-picked progressions in Symptoms Of The Universe, and the weighty, stoner metal guitar lines of Sweet Leaf.
