Si diligis*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
228r
Sequence: 
8
Feast: 
Petri, Pauli
Office/Mass: 
M
Genre: 
R
Position: 
1.2
Cantus ID: 
007649
Mode: 
6T
Addendum: 
P: 326