Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images The ...

Iconic singers have been a mainstay of heavy metal since the very start. From the first time we heard Ozzy Osbourne's eerie cries haunt the opening track on Black Sabbath's genre-sparking debut album, ...

The riff. It's everything to metal. You can strip away pretty much any other element that has come to define the genre over the years - haunting atmospherics, scorching wails and guttural screams, ...