Ante me non est formatus

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
001r
Sequence: 
10
Feast: 
Sabbato Hebd. 2 Adv.
Office/Mass: 
V2
Genre: 
A
Position: 
M
Cantus ID: 
001436
Mode: 
4
Differentia: 
3
Differentia database: 
1--h-g-h-jh-gf-e--4 19a