Ecce de quo Joannes dixit

Source: 
Arras, Bibliothèque municipale, 893 (olim 465)
Folio: 
041r
Sequence: 
1
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
3.
Cantus ID: 
002501
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a