VIDEO : Watch John Fogerty Delight David Letterman With Creedence Medley

John Fogerty delivered a roaring medley of classic Creedence Clearwater Revival cuts ? "Travelin' Band," "Proud Mary" and "Fortunate Son" ? on The Late Show Wednesday night to the delight of departing host David Letterman. Strapped with a blue-and-white plaid-print guitar that matched his flannel, Fogerty and his band began with a frantic rendition of "Travelin' Band," with drummer Kenny Aronoff setting a blistering pace that carried the quartet into "Proud Mary." Though that performance was short and sweet, Fogerty fittingly delivered the song's famous first line ? "Left a good job in the city, working for the man every night and day" ? with a point in Letterman's direction.??