Non confundetur dum loquetur

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
066v
Sequence: 
6
Feast: 
Fer. 6 per annum
Office/Mass: 
N
Genre: 
A
Cantus ID: 
003905
Mode: 
2
Differentia: 
1
Differentia database: 
1--f-f-f-ed-cd-d--4 153e