This edition offers a simple and clear method of how to deal practically with the rhythmic intricacies of the Medieval Ars Subtilior repertoire. With examples from notoriously difficult pieces such as ‘Le greygnour bien’, ‘Sus un fontayne’, ‘Sumite Karissimi’ and ‘Amour m’a le cuer mis’, musicians will be led through a pragmatic guide to how to feel (using both the mind and body) the complex rhythms of this remarkable repertoire, found in the Chantilly Codex and other Medieval manuscripts.