Sing the Music of Hildegard of Bingen as contemplative practice, through the Ear to the Heart. This gentle, contemplative practice of listening and singing the music of Hildegard together is led by Devi Mathieu and requires no previous experience with the music of Hildegard or with medieval music. No reservations required. Suggested offering, $10-20.  Santa Sabina Center, 25 Magnolia Avenue, San Rafael,    415-457-7727 info@santasabinacenter.org.