Associate professor in Latin at Stockholm University, with an MA in Classical Philology at Århus Univ. (DK) and a PhD in Theology (Church History) at Copenhagen Univ. (DK). He is Ars Edendi”s representative in CARMEN (Co-operative for the Advancement of Research in a Medieval European Network).
Besides numerous studies on medieval liturgical poetry, mariology and hagiography, he has published the commentary to the facsimile of the Piacentinan Liber Magistri and a monograph on its repertory of tropes and sequences as well as the first complete Danish translation of the Rule of Benedict and studies on Cicero”s speech Pro Caelio.
His main field of research is the medieval literature with focus on the Ribaldus-collection of liturgical sources in Biblioteca Capitolare in Piacenza, liturgical poetry and hagiography in Italian sources, the writings of Peter the Venerable on Islam, and the 14th cent. North-Italian Dialogus creaturarum moralizatus.
His scholarly interest also includes classical poetry and rhetoric (Catullus and Roman love elegy, Cicero”s speeches and rhetorical works, expressions of exile, the fable as a literary genre) as well as the use of Latin in the comedies of Ludvig Holberg, and the poetry of Jim Morrison and the American beat generation.
Tropes and Sequences in the Liturgy of the Church in Piacenza in the Twelfth Century. An analysis and an edition of the texts, (Lewiston-Queenston-Lampeter: The Edwin Mellen Press, 2002) IX & 438 pp. and 12 plates.
Medieval Liturgical Texts in Italian Manuscripts, (Lewiston-Queenston-Lampeter: The Edwin Mellen Press, 2006), VIII + 284 pp. and 16 plates.
Benedikts Regel. Udgivet med dansk oversættelse og kommentar af Brian Møller Jensen, (Copenhagen: Museum Tusculanum, 1998), 186 pp. – (Rule of St. Benedict in Danish).
‘Hodie puer natus est nobis. The Christmas texts in Piacenza, Bibl. Cap. c. 65’ in Plainsong and Medieval Music 8 (1999), 15-38.
‘Magni presulis celebrans Donati diem sollemnem. Bishop Donatus of Arezzo in Roma, Bibl. Angelica c. 123’ in Rivista Internazionale di Musica Sacra 22 (2000), 119-139.
“La città nella liturgia. Sequenze pasquali e chiese stazionali nel Liber magistri dell” Archivio Capitolare della Cattedrale di Piacenza” in Bollettino Storico Piacentino, 100:2, 2005, 177-203
‘Codex Angelicus 123 as a liturgical manuscript’ in Classica & Medievalia 56 (2005), 303-325.
‘Saints celebrated with a proper mass in Piacenza in the XI-XIV centuries’ in Rivista Internazionale di Musica Sacra, 28 (2007), 119-131.
‘Alcuin and Pseudo-Alcuin in codex placentinus 6’ in Hortus Troporum: Florilegium in honorem Gunillae Iversen (Studia Latina Stockholmiensia 54), ed. by Alexander Andrée & Erika Kihlman, (Stockholm, 2008), 189-199.
‘Il progetto Ars Edendi e l’edizione della versione piacentina della vita di santa Brigida’ in Medioevo piacentino e altri studi: Atti della Giornata di studi in onore di Piero Castignoli (Biblioteca Storica Piacentina 29), a cura di Anna Riva, (Piacenza: Tip.Le.Co., 2009), 95-108.