At lunch at the Rainbow Room recently, Priscilla Presley joined a panel of Elvis experts, journalists and filmmakers to illuminate "The King's" rags to riches career. Certainly an American original, Elvis Presley was a dreamboat to teens when he first began to sing, swiveling his hips on the Ed Sullivan Show. Of course they famously photographed him from the waist up for television’s primetime viewing. But on stage, that was something else. Music aficionados knew his sources, gospel, country, and rhythm and blues, idioms of the South. While many thought his moves brazen, no one contested his musicianship. Priscilla Presley, keeper of the flame who has worked well to maintain his legacy in the public eye, wants everyone to know he was a “Searcher,” the theme of the new two-part HBO documentary about him, that she hopes will force a reappraisal of his art.