 Peter, Paul & Mary also brought Pete Seeger and the Weavers' "If I Had a Hammer" to nationwide audiences, as well as covering songs by other artists such as Dylan and John Denver.It was not long before the folk-music category came to include less traditional material and more personal and poetic creations by individual performers, who called themselves "singer-songwriters".As a result of the financial success of high-profile commercial folk artists, record companies began to produce and distribute records by a new generation of folk revival and singer-songwriters—Phil Ochs, Tom Paxton, Eric von Schmidt, Buffy Sainte-Marie, Dave Van Ronk, Judy Collins, Tom Rush, Fred Neil, Gordon Lightfoot, Billy Ed Wheeler, John Denver, Arlo Guthrie, Harry Chapin, John Hartford, and others, among them.