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In page Ordo Virtutum:

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Hildegard of Bingen received no traditional education in composition, nor was she trained to play instruments.[citation needed] She was "self-taught," although not in a way that many people would expect. Her whole life, Hildegard of Bingen claimed to be both clairvoyant and clairaudient. The music came to her in visions. She also attempted to describe what she was going through in works such as Ordo Virtutum.[1]