"No Elvis, probably no Beatles, no Rolling Stones, no Bowie, no U2, no T Rex. I doubt even guys like Jerry Lee Lewis, Bo Diddley, and Chuck Berry would have ever had the high-profile careers they had without Elvis crashing the party.
Would most of us even care who Bill Monroe is without Elvis' cover of "Blue Moon of Kentucky"? He may not have invented rock and roll, but he was the first guy to break the sound barrier, and he is still sending a sonic boom through our society that will never be reversed. And they didn't film him originally from the waist up only for nothing!"