I was listening to Iron Maiden earlier and the song "The Evil That Men Do" came on. It occurred to me that this is quite possibly one of the greatest vocal performances in heavy metal. Bruce Dickinson's vocal range at this time was absolutely incredible. Of course Dickinson in the early days was one of the most powerful vocalists in metal. Other great examples of his vocal talents are shown in "The Loneliness of the Long Distance Runner", "Aces High", "Moonchild", "Infinte Dreams", "Seventh Son of a Seventh Son", and several more. I'm not sure there are too many others out there like him.
Does anyone have any other examples of terrific vocal performances in metal?