After the Monroe Brothers disbanded in 1938 Bill Monroe formed The Kentuckians in Little Rock Arkansas but the group only lasted for three months. Several gospel-themed numbers are credited to the "Blue Grass Quartet" which featured four-part vocal arrangements accompanied solely by mandolin and guitar – Monroe's usual practice when performing "sacred" songs. Scruggs played the instrument with a distinctive three-finger picking style that immediately caused a sensation among Opry audiences.
He is often referred to as The Father of Bluegrass. Monroe's performing career spanned 60 years as a singer instrumentalist composer and bandleader.