Robert Britton Lyons performs as Carl Perkins during a rehearsal for &quot;Million Dollar Quartet&quot; in a warehouse near The Orleans on Tuesday, Jan. 15, 2013. &quot;Million Dollar Quartet&quot; is based on a performance by Johnny Cash, Jerry Lee Lewis, Carl Perkins and Elvis Presley at Sun Records in Memphis on Dec. 4, 1956. The new show begins at Harrah&#39;s Las Vegas on Feb. 4.