Watch on Soap2day. Follow Guy Clark, Susanna Clark, and Townes Van Zandt as they rise from obscurity to reverence: Guy, the Pancho to Van Zandt’s Lefty, struggling to establish himself as the Dylan Thomas of American music, while Susanna pens hit songs and paints album covers for top artists, and Townes spirals in self-destruction after writing some of Americana music’s most enduring and influential ballads.