Sanctum est verum lumen et

Source: 
Arras, Bibliothèque municipale, 893 (olim 465)
Folio: 
400r
Sequence: 
1
Feast: 
Octava Apostolorum
Office/Mass: 
L
Genre: 
A
Position: 
5
Cantus ID: 
004768
Mode: 
4
Differentia: 
4
Differentia database: 
1--h-hg-h-hjh-gf-e--4 19q