This song was written by Doc Pomus and Mort Shuman for the 1964 film of the same name. Elvis recorded it on July 10, 1963 at Radio Recorders of Hollywood. Working this session were: Scotty Moore, Tiny Timbrell and Billy Strange on guitar; Bob Moore on bass; D.J. Fontana, Buddy Harman and Frank Carlson on drums and percussion; Floyd Cramer, Dudley Brooks and Calvin Jackson on piano; Boots Randolph and William Green on sax; James Zito on trumpet; and Herb Taylor and Randall Miller on trombone. Backing vocals were by The Jordanaires. "Viva Las Vegas" was released as a single in April 1964 and reached #29 in the U.S.A. and #17 in the U.K.. It has since been recorded by ZZ Top. In recent years the song has become recognized as the "unofficial" theme song for the city of Las Vegas according to columnist Mike Weatherford of the "Las Vegas Review-Journal".