Lester Flatt & Earl Scruggs are remembered for their influential 1962 recording of a bluegrass theme song that became a chart-topping hit and introduced the genre to a wide audience. The duo, known for shaping modern bluegrass, has been honored on multiple anniversaries marking the passing of key members, including a fiddler who helped define the genre's evolution and a singer associated with Elvis Presley and Patsy Cline.