I just got a previously unreleased 2-CD set,
Pete Seeger: "Live in '65,", (Appleseed Recordings) derived from the tapes for a Saturday, Feb 20 1965 concert in the Carnegie Music Hall, Pittsburgh PA. Classic Pete, conducting his audience in grand style, going from Oh' Susanna," ending in "Abyyoyo," and not an audience-clunker in the entire thing. In between there's gems like "The Freedom Come All Ye" and a tinkling "Guantanemere," plus about 30 other classics I'm too lazy to type out. Go to the Appleseed Recordings website and I bet you'll get samples.