Helen Deeming is Senior Lecturer in Music at Royal Holloway, University of London. She has taught medieval music at Cambridge, King's College London, Southampton and Royal Holloway, University of London and won several teaching prizes. She is the editor of Songs in British Sources, c.1150-1300, Musica Britannica, Volume 95 (2013) - a scholarly edition that makes many songs available in print for the first time. Elizabeth Eva Leach is Professor of Music at the University of Oxford. Her publications include Guillaume de Machaut: Poet, Secretary, Musician (2011), Sung Birds: Music, Nature and Poetry in the Later Middle Ages (2007), Citation in Medieval and Renaissance Musical Culture (co-edited with Suzannah Clark, 2005) and Machaut's Music: New Interpretations (editor, 2003). In 2013 she was awarded the Dent medal of the Royal Musical Association; she was also winner of the 2012 Phyllis Goodhart Gordan Prize of the Renaissance Society of America, and the 2007 Outstanding Publication Award of the Society for Music Theory.