The series Leuven Library of Music in Facsimile from the Alamire Foundation, with David Burn and Bart Demuyt as its general editors, presents high-quality reproductions of primary music sources of outstanding aesthetic, historical and cultural value. The series is broadly conceived, covering monophony and polyphony, both vocal and instrumental, from the Middle Ages, the Renaissance and later times. In order to approach the original documents as closely as possible, each facsimile is in full colour and at original size. Each is also accompanied by an extended commentary, written by a leading expert, that sets out the most recent and up-to-date assessment of the source, including codicology, contents, history and context.