One: Part One; The Musical Repertories of the Liturgy of Southern Italy and Beneventan Sources *; A New Source for the Antiphonale Missarum *; The Missal of a Church Adjacent to the Lateran: Roma Archivio di Stato, MS Sanctissimo Salvatore 997 *; Regino Prumiensis and The Tones; What the Dove Could not yet Sing: Alleluia Melodies After 1100; Two: Part Two; Interrelationships between Text and Music in the Refrain Forms of Guillaume de Machaut; Semantics, Structure or a Manner of Speaking?; A Hard Look at Trouvère Melodic Style; From Oral to Written: Change in Transmission of Instrumental Music in Fifteenth-Century Europe; Sir John Davies' Orchestra as a Dance Historical Source; Two Motets Attributed to Tomás Luis de Victoria in Italian Sources: An Introductory Study; Three: Part Three; Symposium Concert Programme