The Nitty Gritty Dirt Band is an American country-folk-rock band that was formed in 1966. The band has had several line-up changes over the years, but the core members have remained the same. They are known for their unique blend of country, folk, and rock music, as well as their use of traditional instruments such as banjo, fiddle, and mandolin. The band has released numerous albums and singles, and has been nominated for multiple Grammy Awards. They are considered one of the most influential bands in the history of country music.