The folk-rock duo Amy Ray and Emily Saliers have been making music for over 25 years. They’re known for their social activism on-stage and off, but long before they became the Indigo Girls, they were singing in church choirs. They see music as a continuum of human existence, intertwined with spiritual life in a way that can’t be pinned down.

Amy Ray is a singer-songwriter who is one half of the folk-rock duo Indigo Girls. Her latest solo album, “Holler,” was released in September 2018.

Emily Saliers is a singer-songwriter who is one half of the folk-rock duo Indigo Girls. She is also the co-author of “A Song to Sing, A Life to Live: Reflections on Music as a Spiritual Practice.” Her debut album, “Murmuration Nation,” was released in 2017.

This interview is edited and produced with music and other features in the On Being episode “Indigo Girls — No Separation: On Music and Transcendence” Find more at onbeing.org.