It’s undated but labeled “Baker Shakespeare rehearsal.” It has to be Macbeth, don’t you think?
Bonus: Late yesterday morning I was upstairs in Cohen House setting up the projector for a talk I was giving over lunch. As I worked I listened to someone playing the piano downstairs and couldn’t recall ever hearing it played before. I went for a look and was so happy to find my friend John Dobelman of the Stat Department at the keyboard. It was a lovely moment. Made my day.