7. Eddie Vedder
In 1990 Eddie Vedder was working at a gas station when his buddy Jack Irons gave him a demo tape of a Seattle band searching for a new singer. While surfing, Vedder came up with lyrics for the three songs and sent the tape back to the band with his contributions. They were blown away and Vedder was soon asked to join what became Pearl Jam. One of the songs on that tape, "Alive," was blaring out of countless bedrooms across America within about a year. Since then Vedder has become one of the most imitated singers in rock, but nobody has come close to matching his ferocious wail.