Elvis backstage at Ellis Auditorium, Memphis - May 15, 1956 More than 7,000 people jammed Ellis Auditorium on the night of May 15, 1956, to stomp, shudder, shriek and sigh as a young Elvis shaked, rattled, rock 'n rolled. Elvis was the blockbuster of Bob Neal's Cotton Picking Jamboree, a feature of Cotton Carnival opening night.