Elvis Presley is rock 'n' roll. He sang like a dream, he was sexy enough to send girls swooning, and he exuded enough cool not to have the boys resent him. Adults worried about his rebellious nature, but they were eventually comforted by his polite, courteous manner. Yet as perfect as Presley's 1950s rock recordings are, he excelled at so much: down-home country crooning, raucous R&B belting, enraptured Gospel singing, and classic pop balladeering. Elvis wasn't a vocal chameleon: th...  [+]