Bill Monroe & His Blue Grass Boys has been played over 10 times on NTS, first on 2 June 2017. Bill Monroe & His Blue Grass Boys's music has been featured on 11 episodes.

William Smith Monroe was an American mandolinist, singer, and songwriter, who helped to create the style of music known as bluegrass. Because of this, he is commonly referred to as the "Father of Bluegrass".

The genre takes its name from his band, the Blue Grass Boys, named for Monroe's home state of Kentucky. Monroe's performing career spanned 69 years as a singer, instrumentalist, composer and bandleader.