Ista est speciosa electa a

Source: 
Arras, Bibliothèque municipale, 893 (olim 465)
Folio: 
439r
Sequence: 
2
Feast: 
Nativitas Mariae
Office/Mass: 
M
Genre: 
A
Position: 
2.5
Cantus ID: 
003414
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a