Presents the video “Jubilee Singers” on Friday, December 20, at noon, in Redfield Auditorium, 45 Water St., Woods Hole. In the chaotic decade following the Civil War, a group of young ex-slaves in Nashville, Tennessee, set out on a mission to save their financially troubled school by giving concerts. Sponsored by the WHOI Visitor Center. Coffee, tea, and cookies served. Donations accepted.