The late John Jackson is someone I'd call a "songster," (although the term is also regularly applied to songbooks, as you may well know).

John could go from a Piedmont blues to "I Remember the Day Clayton Delanie Died" without seeming out or place doing either number. He did Jimmy Rodgers, Mississippi John Hurt, Blind Blake, and Jimmie Wakely and his ilk. He didn't do much real street singing, but was always available for house parties in his native Rapahannock Co., Virginia, even after being discovered by Chuck Perdue (founder of FSGW).

Bob Clayton