For some reason, there is quite a bit of disagreement as to the identity of the whistler for The Andy Griffith Show theme song. Some claim the whistler was Fred Lowery, some claim it was Earle Hagen (who penned the tune himself), some claim it was a fellow by the name of Jerry Duane. But even the extensive discography on Jean “Toots” Thielemans's own website does not claim The Andy Griffith Show theme song as one of his credits.