In principio et ante saecula

Source: 
Firenze (Florence), Biblioteca Medicea-Laurenziana, Conv. sopp. 560
Folio: 
021r
Sequence: 
3
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
003273
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a