Fifty years into whatever we’ve chosen to do with our lives, may we all be as vigorous, mischievous, and curious as Talking Band. The company—founded by Ellen Maddow, Tina Shepard, and Paul Zimet in 1974—is celebrating half a century of experimental theater-making, and in barely three months, it’s premiered as many new shows. The Following Evening, written for Maddow and Zimet by Abigail Browde and Michael Silverstone of 600 Highwaymen, was a gorgeous meditation on coupledom...