Folk legend Joan Baez celebrates her 75th birthday surrounded by friends and collaborators including Judy Collins, Emmylou Harris, Jackson Brown, David Bromberg, Mary Chapin Carpenter, Emmylou Harris, and the Indigo Girls. Beacon Theatre, 2124 Broadway at 75th St. Jan. 27, 8 p.m. Tickets are $59.50 – $149.50 at beacontheatre.com.