The emerging Fourth Wall Ensemble, founded in 2023, has made a splash in its first year with a double album release, including Awake, with music by Samuel Siskind; and Ad Manus, with vocal selections by Caroline Shaw, Dietrich Buxtehude, Jeff Beal, Eric Whitacre, Morten Lauridsen, and Reena Esmail. Christopher Allen, the ensemble’s artistic and creative director, speaks with Mary Claire Murphy and highlights some of Fourth Wall Ensemble’s recent live performances, especially their appearance on the Death of Classical series that’s held in crypts and cemeteries in New York City.