O magnum mysterium -- Adrian Willaert (c. 1490-1562) Title: O magnum mysteriumComposer(s): Adrian Willaert (c. 1490-1562)Performances at Saint Thomas Church:Festal Eucharist, 2021-12-26 Title: O magnum mysteriumComposer(s): Adrian Willaert (c. 1490-1562)Performances at Saint Thomas Church:Festal Eucharist, 2021-12-26
