Cold War Choir Practice is such a joyful, weird, and wonderful surprise. You will walk out grinning. It’s set during the Cold War, where a small-town choir rehearsal suddenly cracks open into this hilarious, heartfelt scramble to make sense of a looming nuclear deal. The New York Times called it a “music-infused comedy” that ends the festival “on a high,” and that’s exactly how it feels. If you want something smart, funny, and totally different from anything else on stage right now, go see it.