Elvis Presley: Publicity
Public acknowledgement and praise for Elvis Presley was incredible
throughout his music career, but it is still at a level that appears
to be beyond comprehension. These are the factors that contributed
to the Presley phenomena:

As a musician he was both talented as a songer and showman
Elvis took risks - style of music and style of performing
Television Appearances (eg The Ed Sullivan Show)
His Management Team
Movies, Radio Shows
Literature (eg books, magazines, newspapers)
The Fans - those who loved both Elvis and his music