"Writing For The King" was a 2 CD set and entertaining book issued in late 2006. Robert Moseley sang the demo for "Good Luck Charm" (Aaron Schroeder - Wally Gold). According to Wikipedia Kenny Dino (Diono) recorded the demo but I'll go with the published CD and book info for now.

In 1961 Elvis Presley's "Good Luck Charm" was released and hit number one on Billboard the next year.