When did hildegard von brigen write columba aspexit?

Hildegard von Bingen composed "Columba Aspexit" in the 12th century, specifically around the year 1150. This monophonic chant is part of her larger collection of works, which include music and writings on theology, medicine, and natural history. The piece is notable for its vivid imagery and spiritual themes, reflecting Hildegard's unique mystical vision.