In The Everly Brothers’ Rock and Roll Odyssey, a video documentary made around the time of the duo’s London reunion concert in 1983 — ten years after their breakup on a Southern California stage — Don and Phil narrate their own story. They still seem a little in awe of their vocal talent, looking upon it as a sort of genetic gift. The modesty lends them an ingenuous quality that belies their years. The sons of a traveling country-and-western team, Ike and Margaret Everly, the brothers first performed with their family on the road and on the radio. Then, as angelic-looking teenagers, they transformed the sounds of their Kentucky country roots into a bittersweet form of rock and roll.