Invocation for World Angel Day was commissioned by the founders of the very first World Angel Day, Diana Cooper and David Jeans. Rebekah set to music Diana's exquisite invocation, and performed it at Kensington Town Hall in London, England just three weeks after 9/11. Included also are Rebekah's arrangement of Amazing Grace, and a favorite chant by St. Hildegard von Bingen, O Viridissima Virga, an ode to Mother Mary.