O vera summa sempiterna

Source: 
Cambridge, University Library, Mm.ii.9
Folio: 
293
Sequence: 
6
Feast: 
De Trinitate
Office/Mass: 
L
Genre: 
A
Position: 
4
Cantus ID: 
004087
Mode: 
4
Differentia: 
1
Differentia database: 
1--h-g-h-jh-gfe-e--4 19b
Extra: 
27