Few voices in folk music have captured a time and place quite like Joan Baez’s. Her incredible life is on display in the documentary “Joan Baez I Am a Noise,” which follows her career as she becomes one of the definitive singers of her generation. The film also gives an intimate look at her life, loves and traumas through diary entries, recordings and performances. Joan talks to Tom about her career, what it means to leave behind an honest legacy, and what she’s most proud of.