1956 was the year that Elvis Presley changed the course of American popular music forever. This one-hour documentary captures the excitement of the King’s breakthrough campaign with hitherto-unseen footage and rare early recordings, including such landmark performances as "Hound Dog" on "The Steve Allen Show," "Love Me Tender" and "Don’t Be Cruel" on "The Ed Sullivan Show," and his appearance on "The Dorsey Brothers Show." The late, great Levon Helm narrates. Momentum.