June 6, 1966-August 29, 1966 (NBC); May 30, 1969-September 5, 1969 (ABC). Singer John Davidson as host to two prime-time variety hours. The first was titled "The Kraft Summer Musical Hall" and featured George Carlin, the Lively Set, the King Cousins, and Jackie and Gayle. The second show was known as "The John Davidson Show." The 1969 show was taped in London and featured Rich Little, Mireille Mathieu and Amy McDonald.