On July 5th, 1954, at Sun Studios in Memphis, Elvis Presley, guitarist Scotty Moore, and bassist Bill Black were horsing around with “That’s All Right,” a tune by bluesman Arthur Crudup, when producer Sam Phillips stopped them and asked, “What are you doing?” “We don’t know,” they said. Phillips told them to “back up and do it again.” Bridging black and white, country and blues, Presley’s sound was playful and revolutionary, charged by a spontaneity and freedom that changed the world. He released four more singles on Sun — including definitive reinventions of Wynonie Harris’ “Good Rockin’ Tonight” and Junior Parker’s “Mystery Train” — before moving on to immortality at RCA. They’re all here on a collection that serves as well as anything out there as a definitive chronicle of the birth of rock & roll. - RollingStone.com