The pattern of musical notes used (Phrygian mode) returns again and again to the note E, creating a distinctive chant-like sound. This music was written by Hildegard of Bingen, who lived nearly ...

Photo (excerpt) by Ralph Hammann via Wikimedia Commons; licensed under CC BY-SA 4.0 St. Hildegard of Bingen was a 12th-century German nun, but she was also a writer, composer of chants, mystic, and ...