Probably the most famous bluegrass band of all time was Flatt & Scruggs and the Foggy Mountain Boys. They made the genre famous in ways that not even Bill Monroe, who pretty much invented the sound, ever could. Because of a guitar player and vocalist from Tennessee named Lester Flatt and an extraordinary banjo player from North Carolina named Earl Scruggs, bluegrass music has become popular the world over and has entered the mainstream in the world of music.