Differentiae in the Klosterneuburg manuscripts are written in the margins of the manuscripts, but staff lines (usually just the F and/or C line) are extended into the margins to clarify the pitched content of each differentia. The original Cantus index for this manuscript coded the differentiae with a two-digit system: an upper-case letter to indicate the final pitch of the differentia within each mode followed by a sequentially-ordered numeral. The coding system was consistent throughout the eight Klosterneuburg manuscripts.
Lacoste, Debra. Inventory of Klosterneuburg, Augustiner-Chorherrenstift - Bibliothek, 589. In: Cantus: A Database for Latin Ecclesiastical Chant: Inventories of Chant Sources. Directed by Debra Lacoste (2011-), Terence Bailey (1997-2010), and Ruth Steiner (1987-1996). Web developer, Jan Kolácek (2011-).
Lacoste, Debra. The Earliest Klosterneuburg Antiphoners. Ph.D. dissertation, The University of Western Ontario, 1999.
Images: Klosterneuburg, Augustinian Monastery, Cod. 589, Handschriftensammlungen, Manuscripta, Austrian National Library
Standardized manuscript tonary completed by Rebecca Shaw (Dalhousie University) on May 20, 2017. Edited by Jennifer Bain, Sister Ilaria Culshaw, Lucia Denk, Brayden Olson, and Rebecca Shaw (Dalhousie University) on June 18, 2019.