Saunders Terrell, known as Sonny Terry, was an American Piedmont blues and folk musician, who was known for his energetic blues harmonica style, which frequently included vocal whoops and hollers and occasionally imitations of trains and fox hunts.

Piedmont blues refers primarily to a guitar style, which is characterized by a fingerpicking approach in which a regular, alternating thumb bass string rhythmic pattern supports a syncopated melody using the treble strings generally picked with the fore-finger, occasionally others. The result is comparable in sound to ragtime or stride piano styles. Blues researcher Peter B. Lowry coined the term, giving co-credit to fellow folklorist Bruce Bastin. The Piedmont style is differentiated from other styles, particularly the Mississippi Delta blues, by its ragtime-based rhythms.