WTF corey taylor has an amazing voice .. so what if its not "clean" at least it doesnt sound fake!
James hetfield could carry a song in tune better than chris martin any day.
Dave grohl - yet another genious with an amazing rough voice.
I much prefer this kind of singing to other genres where the voices are completely edited by computers to sound better yet the 'singer' either mimes or sings with a nasal whine. grunting singers never let down live. And they really really work hard on stage.