Two occupants of 59E59 from recent seasons inform the new musical now playing there. The Sabbath Girl, from 2024, was a sweet musical romance of a Jew and a non-Jew in modern-day Manhattan. Dear Jack, Dear Louise, from 2025, had playwright Ken Ludwig affectionately serving up the epistolary wartime courtship of his parents, an Army doctor and a chorus girl. Pour these two shows into a blender, add a generation, hit Purée, and you come up with How My Grandparents Fell in Love.

