London (Canada), University of Western Ontario - Music Library, M2150

CDN-Lu M2150
Differentiae type
Information on differentia

Differentiae are entered in-line, following each antiphon. They were originally indexed hierarchically by mode using an alpha-numeric code that indicates the last note of the differentia and a sequentially-applied number (e.g., A1, A2, G1, G2, etc.).


Lacoste, Debra. Inventory of London (Canada), University of Western Ontario - Music Library, M2150. In: Cantus Manuscript 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-).

Images for differentia indexing provided by Brian MacMillan, Music Library, Western University.

Contains 25 unique differentiae
Diff. ID Melodic transcription Mode Old code
69b 1--h-h-g-f-gh-gf--4 Mode 1 F1
60a 1--h-h-g-f-h-gfed--4 Mode 1 D1
66d 1--h-h-g-f-gh-g--4 Mode 1 G1
67c 1--h-h-g-f-gh-gh--4 Mode 1 A1
74q 1--h-h-g-f-gggff-d--4 Mode 1 D2
66i 1--h-h-g-f-gh-gg--4 Mode 1 G2
64b 1--h-h-g-f-g-h--4 Mode 1 A2
152b 1--f-f-f-e-c-d--4 Mode 2 D1
91d 1--k-kh-k-hj-hg-gh--4 Mode 3 A1
213a 1--k-k-k-hg-kk-j--4 Mode 3 B1
28a 1--h-g-h-j-g-ef--4 Mode 4 F1
25h 1--h-hg-h-hj-g-gh--4 Mode 4 A1
24d 1--h-hg-h-hj-g-g--4 Mode 4 G1
19a 1--h-g-h-jh-gf-e--4 Mode 4 E1
129a 1--k-k-l-j-k-h--4 Mode 5 A1
69i 1--h-hg-f-gh-g-f--4 Mode 6 F1
69k 1--h-hg-f-gh-gg-f--4 Mode 6 F2
148a 1--l-l-m-l-kl-k--4 Mode 7 C2
215a 1--l-l-m-l-kl-j--4 Mode 7 B1
144a 1--l-l-m-l-k-jk--4 Mode 7 C1
143b 1--l-l-m-l-k-jh--4 Mode 7 A1
99d 1--k-k-h-k-l-k--4 Mode 8 C1
383a 1--k-h-j-k-j-h--4 Mode 8 A1
84a 1--k-h-j-k-h-g--4 Mode 8 G1
96k 1--k-k-k-h-kk-j--4 Mode 8 B1