Musical Childhoods and the Cultures of Youth, edited with Roe-Min Kok (Wesleyan University Press, 2006)
Shaping a Monastic Identity: Liturgy and History at the Imperial Abbey of Farfa, 1000-1125 (Ithaca: Cornell University Press, December 2005).
“The Theological Role of Office Hymns in a Ninth-Century Trinitarian Controversy,” in In principio erat verbum. Mélanges P. Tombeur, ed. Benoît-Michel Tock, Textes et Etudes du Moyen Âge 25 (Turnhout: Brepols, 2005), 19-44
“The Didactic Function and Context of Eleventh-Century Glossed Hymnaries,” in Der lateinische Hymnus im Mittelalter: Überlieferung-Ästhetik-Ausstrahlung, ed. Andreas Haug, Monumenta Monodica Medii Aevi, Subsidia IV (Kassel: Bärenreiter, 2004), 301-29
"Orality, Literacy, and the Early Notation of the Office Hymns," Journal of the American Musicological Society 56 (2003): 99-167
"A Lost Mozarabic Liturgical Manuscript Rediscovered: New York, Hispanic Society of America, B2916, olim Toledo, Biblioteca Capitular, 33.2," Traditio 57 (2002) 189-219
"Work and Play in Sacred Music and its Social Context, ca. 1050-1250," in The Use and Abuse of Time in Christian History, ed. R.N. Swanson, Studies in Church History 37 (Woodbridge: Blackwell, 2002), 57-79
"Glosses on the Office Hymns in Eleventh-Century Continental Hymnaries," The Journal of Medieval Latin 11 (2001): 1-26
"Women's Performance of the Lyric before 1500," in Woman's Song: Cross-Cultural Perspectives, ed. Ann Marie Rasmussen and Anne Klinck (Philadelphia: University of Pennsylvania Press, 2001), 47-65
"Training for the Liturgy as a Form of Monastic Education," in Medieval Monastic Education, ed. Carolyn Muessig and George Ferzoco (Leicester, London, New York: Leicester University Press, 2000), 7-20
"Ricerche sul breviario di Santa Giulia (Brescia, Biblioteca Queriniana, ms H VI 21" (coauthored with Martina Pantarotto), Studi medievali 42 (2001): 301-318
"Liturgy and History at the Abbey of Farfa in the Late Eleventh Century: Hymns of Peter Damian and Other Additions to BAV Chigi C.VI.177," Sacris Erudiri 39 (2000): 253-280
"Eleventh-Century Continental Hymnaries Containing Latin Glosses," Scriptorium 53 (1999): 200-251
"The Sources and Significance of the Orpheus Myth in 'Musica Enchiriadis' and Regino of Prüm's 'Epistola de harmonica institutione'," Early Music History 18 (1999): 47-74
"Performative Exegesis in the Fleury Interfectio Puerorum," Viator: Medieval and Renaissance Studies 29 (1998): 39-64
"The Liturgical Role of Children in Monastic Customaries from the Central Middle Ages," Studia Liturgica 28 (1998): 194-209
