As one of the most influential patrons of her time, Margaret had an impressive collection of music manuscripts containing repertoire by the leading composers of the day. The Mechelen Choirbook, a luxurious codex produced in the workshop of Petrus Alamire, is perhaps one of the best-known sources associated with the Habsburg-Burgundian court.

To this day, the choirbook is preserved in the city for which it was created, where Margaret held court as regent of the Habsburg Low Countries. It was from the Court of Savoy in Mechelen that Margaret oversaw the construction of the imposing Augustinian monastery in Bourg-en-Bresse. She herself would never be able to admire the finished result: she died in 1530, two years before the last stone was laid. The Royal Monastery of Brou, which highlights the life and cultural patronage of its founder, has recently begun displaying a facsimile of the Mechelen Choirbook on the beautiful wooden lectern in the choir of the monastic church. The Alamire Foundation produced this highly detailed, full-size facsimile as part of the Leuven Library of Music in Facsimile series. In doing so, a bridge has been built to the musical heritage that could have resounded there centuries ago.