Suavis et morosus : The ways of a word / Leofranc Holford-Strevens -- Concentum celi quis dormire faciet? : Eriugenian cosmic song and Carolingian planetary astronomy / Gabriela Ilnitchi Currie -- The making of Carolingian mass chant books / Susan Rankin -- Re-reading Notker's preface / Andreas Haug -- Properchant : English theory at home and abroad, with an excursus on Amerus/Aluredus and his tradition / Bonnie J. Blackburn -- The manuscript processionals of Notre Dame of Paris / Michel Huglo -- The manuscript makers of W1 : Further evidence for an early date / Rebecca A. Baltzer -- What is isorhythm? / Margaret Bent -- Two abbots and a rotulus : New light on Brussels 19606 / Karl Kügle -- Who really composed Mille regretz? / Joshua Rifkin -- Reconsidering the Toledo codex of the Cantigas de Santa Maria in the 18th century / Susan Boynton -- Patronage and friendship in the mid-nineteenth century : An unpublished autograph letter from Clara Schumann to Carl Gustav Carus, physician to the Saxon court, natural philosopher and landscape artist / Linda Correll Roesner -- Messiaen reads the infancy gospels : The Vingt regards sur l'enfant-Jésus as Christology / David Butler Cannata.