A look at the rise of heavy metal pioneers Black Sabbath. The hell-raising quartet, led by Ozzy Osbourne, changed the face of rock with the release of Paranoid in 1970.

A fascinating look at the rise of English electronic band Depeche Mode, whose catchy compositions throughout the 80s influenced much of the electronic music that followed.

A look at how Iron Maiden have led the way in heavy metal by selling more than 50 million records, setting trends and influencing bands from Metallica to Marilyn Manson.