She was a brilliant songwriter and song interpreter who helped define the Americana genre. Steeped in the traditional folk tradition of her parents' generation -- by artists like Odetta, Malvina Reynolds, and Pete Seeger -- her artistic vision was strongly influenced by "outlaw" Texas singer-songwriters like Townes Van Zandt, Guy Clark, and Jerry Jeff Walker. Her songwriting and vocal collaborations were far-reaching. On today's show we merely scratched the surface of her work with tracks from the Chieftains, John Prine, Tom Russell, and Eric Taylor.