The soundtrack of Emily Margaret Shakeshaft’s childhood became a means of comfort and grounding as she grew older. One of the songs in that soundtrack that her mother curated was “Babyfather” by the Grammy Award-winning singer Sade. As fate would have it, Sade’s transgender son, Izaak Theo Adu-Watts, sang on that track, and, on April 16,Ms. Shakeshaft married Mr. Adu-Watts.