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  • New Sources for Proper Tropes: 11th to 16th Centuries. Monumenta Monodica Medii Aevi, Subsidia 8. Kassel: Bärenreiter, forthcoming July 2019.
  • The Sequences of Nidaros: A Nordic Repertory and Its European Context, edited by Lori Kruckenberg and Andreas Haug. Skrifter nr. 20. Trondheim: Tapir Academic Press, 2006.


  • “Sequence.” In The Cambridge History of Medieval Music, 2 vols., edited by Mark Everist and T. F. Kelly, pp. 300–356. Cambridge: Cambridge University Press, 2018.
  • “Singing History: MusicalDetail in the Casus Sancti Galli.” In Medieval Cantors and Their Craft:Music, Liturgy, and the Shaping of History (800–1500), edited by Katie Bugyis, Andrew Kraebel, and Margot Fassler, pp. 59–88. Writing History in the Middle Ages 3. Woodbridge, Suffolk: York Medieval Press of Boydell and Brewer, 2017.
  • “Zu den Propriumstropen in der liturgischen Musikpraxis des Kölner Raums.” In Musik der mittelalterlichen Metropole. Räume, Identitäten und Kontexte der Musik in Köln und Mainz, ca. 900–1400, edited by Fabian Kolb, pp. 157–197. Beiträge zur rheinischen Musikgeschichte. Kassel: Merseburger, 2016.
  • “The Relationship between the Festal Office and the New Sequence: Evidence from Medieval Picardy.” Journal of the Alamire Foundation 5 (2013): 201–33.
  • “Ekkehard’s Use of Musical Detail in the Casus Sancti Galli.” In Medieval Music in Practice: Studies in Honor of Richard Crocker, edited by Judith Peraino, pp. 23–57. Middleton, Wisconsin: American Institute of Musicology, 2013.
  • “The Absence of Transmission: Symptoms of a Musical-Cultural Reception Barrier between the West- and East Frankish Regions.” In Musik und kulturelle IdentitätBericht über den XIII. Internationaler Kongress der Gesellschaft für Musikforschung in Weimar, 3 vols., edited by Detlef Altenburg and Rainer Bayreuther, vol. 3: pp. 466–476. Kassel and New York: Bärenreiter, 2012.
  • “Music for John the Evangelist: Virtue and Virtuosity at Paradies.” In Leaves from Paradise: The Cult of John at the Dominican Convent Paradies bei Soest, 133–160, edited by Jeffrey F. Hamburger. Houghton Library Studies. Cambridge, MA: Houghton Library, distributed by Harvard University Press, 2008.
  • “The Lotharingian Axis and Monastic Reforms: Towards the Recovery of an Early Messine Trope Tradition.” In Cantus Planus – Study Group of the International Musicological Society: Papers Read at the Twelfth Meeting, Lillafüred, Hungary. 23–28 August 2004, edited by László Dobszay, et al., 723–752. Budapest: Hungarian Academy of Sciences, 2006.
  • “Neumatizing the Sequence: Special Performances of Sequences in the Central Middle Ages,” Journal of American Musicological Society 59/2 (Summer 2006): 243–317.
  • “Making a Sequence Repertory: The Tradition of the Ordo Nidrosiensis Ecclesiae” (Chapter 1) and “Two Sequentiae novae at Nidaros: Celeste organum and Stola iocunditatis” (Chapter 11). In The Sequences of Nidaros: A Nordic Repertory and It European Context, 5–44 and 297–342, edited by L. Kruckenberg and Andreas Haug, Skrifter nr. 20. Trondheim: Tapir Academic Press, 2006.
  •  “Some Observations on a Troparium Tardivum. The Proper Tropes in Utrecht, Universiteitsbibliotheek, 417,” Tijdschrift van de Koninklijke Vereniging voor Nederlandse Muziekgeschiedenis 50/1–2 (2003): 151–182.
  • “Zur Rekonstruktion des Hirsauer Sequentiars,” Revue bénédictine 109/1–2 (1999): 186–207.