A poor, cross-eyed boy from Kentucky, Bill Monroe created the hard-driving, high-lonesome genre known as bluegrass. Thomas S. England/Time & Life Pictures/Getty Images hide caption

itoggle caption Thomas S. England/Time & Life Pictures/Getty Images

Bill Monroe performs in 1975. Thomas S. England/Time & Life Pictures/Getty Images hide caption

itoggle caption Thomas S. England/Time & Life Pictures/Getty Images