Walk on By: The Story of Popular Song S01E03 - The Road to Rock 'n' Roll

When Elvis Presley made his explosive debut and introduced the world to rock 'n' roll in 1956, he seemed to come from nowhere. But far from being a bolt from the blue, the seductive sound of rock 'n' roll was the product of a process of musical evolution that had been taking place in America's Deep South for at least 50 years.