How Broadway found its Gen Z audience

NEW YORK — Kimberly Belflower knew “John Proctor is the Villain” needed its final cathartic scene to work — and, for that, it needed Lorde’s “Green Light.” “I literally told my agent, ‘I would rather the play just not get done if it can’t use that song,’” the playwright laughed. She wrote Lorde a letter, explaining what…