If you like slapstick comedy, this is for you: four short films featuring Buster Keaton, Charlie Chaplin and Harold Lloyd and Laurel & Hardy, top comedians of the ‘20s and ‘30s. Silent films, though devoid of sound, were rarely silent, as they were accompanied by organ. The auditorium houses the world’s largest Pilcher Pipe Organ, which Timothy Baker will play. This is a fundraiser for upkeep of the organ. —Jo Anne Triplett