On Thursday, February 17th 2022, during the All Souls Seminars of Medieval and Renaissance Music of the University of Oxford, Antonio Calvia and Anne Stone will illustrate the result of their recent studies on two Ars Nova fragments discovered respectively in 2019 and 2020, belonging to the same manuscript (ca. 1400). The seminar will be held online on Zoom, and participants are required to register at the following link.