Using the 12th century plainchant of Hildegard of Bingen as his inspiration, Kevin Keller creates a timeless journey through the stages of life with "Evensong", scored for a quartet of female vocalists, strings, piano, organ, and synthesizers. We are taken from conception and birth, moving to the playful innocence of early childhood, followed by growing up, then the uncertainty of adulthood, the confusion and struggle of making one's way in the world, the peace that comes in maturity, the transition of death, and the mystery of what comes after. At every step of the way, Keller combines classical textures and modern timbres and rhythms in evocative fashion, often crowned by the beauty of the four female voices in unison.