Bluegrass music is a genre of American roots music that developed in the 1940s in the United States Appalachian region. The genre derives its name from the band Bill Monroe and the Blue Grass Boys. Unlike mainstream country music, bluegrass is traditionally played on acoustic stringed instruments. Bluegrass has roots in traditional English, Scottish and Irish ballads and dance tunes, and in traditional African-American blues and jazz. Bluegrass was further developed by musicians who played with Monroe, including 5-string banjo player Earl Scruggs and guitarist Lester Flatt. Monroe characterized the genre as: "Scottish bagpipes and ole-time fiddlin'. It's Methodist and Holiness and Baptist. It's blues and jazz, and it has a high lonesome sound."