The Nitty Gritty Dirt Band is an American country-folk-rock band that has existed in various forms since the original founding in California in 1966. The group's membership has had at least a dozen iterations over the years, including five years, between "Dirt, Silver & Gold" (1976) and "Let's Go" (1983), when the band performed and recorded as The Dirt Band. The band's best-known song was a 1970 cover of Jerry Jeff Walker's folk song "Mr. Bojangles".