Guillaume de Machaut is the first “famous” composer in western musical history. In his time, the Middle Ages, most composers delivered their works anonymously (as part of their clerical duties), but Machaut was considered such a master of his creative art that he presented his works under his own name. He was in service of the highest monarchs, among whom Charles V, King of France. Machaut’s “Messe de Nostre Dame” is the first polyphonic Mass written, a complicated structure full of ingenious compositorial techniques. But even without the theoretical knowledge we are still spellbound by the haunting beauty and mystery of this masterpiece.