On July 30th  in 1954, 19-year old Elvis Presley appeared in concert for the first time at the Overton Park Orchestra Shell in Memphis, Tennessee.  Elvis was third on the bill, behind country crooner Slim Whitman.

Legend has it that young Mr. Presley was quite nervous in his first public appearance, and began gyrating his leg.  Something he kept in his act until the very end.

Now you know how the Elvis leg thing started.  Thankyouverymuch.