Activist musician Pete Seeger, 92, center, sings before a crowd of nearly a thousand demonstrators sympathetic to the Occupy Wall Street protests at a brief acoustic concert in Columbus Circle Saturday in New York. The demonstrators marched down Broadway singing "This Little Light of Mine" and other folk and gospel songs while ad-libbing lines about corporate greed and social justice. (AP Photo/John Minchillo)

Question: Who is your favorite folk singer?