What does divine love sound like? In his beloved piece “The Protecting Veil,” composer John Tavener seeks to depict what he describes as “the almost cosmic power of the Mother of God.” Regardless of your spiritual beliefs, it’s a work that couples immense emotional power with an other-wordly radiance. Liz Lyon guest-hosts a program that also features similarly spiritually-themed pieces, including Christopher Rouse’s “Supplica” and Gavin Bryars “Eternity is a Mysterious Absence of Times and Ages.”