The U.S. state of North Carolina is known particularly for its tradition of old-time music, and many recordings were made in the early 20th century by folk song collector Bascom Lamar Lunsford. Most influentially, North Carolina country musicians like the North Carolina Ramblers and Al Hopkins helped solidify the sound of country music in the late 1920s, while influential bluegrass musicians such as Earl Scruggs, Doc Watson and Del McCoury came from North Carolina. Arthur Smith is the most notable North Carolina musician/entertainer who had the first nationally syndicated television program which featured country music. He composed "Guitar Boogie", the all-time best selling guitar instrumental, and "Dueling Banjos", the all-time best selling banjo composition. Country rock star Eric Church from the Hickory area has had 2 #1 albums on theBillboard200, includingChiefin 2011. Eric Church graduated from Appalachian State University. Both North and South Carolina are a hotbed for traditional country blues, especially the style known as the Piedmont blues. Elizabeth Cotten, from Chapel Hill, was active in the American folk music revival.