Hi sunt ecclesiarum

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
227v
Sequence: 
28
Feast: 
Petri, Pauli
Office/Mass: 
V
Genre: 
A
Position: 
2
Cantus ID: 
202136
Mode: 
1
Differentia: 
2
Differentia database: 
1--h-h-g-f-g-gfed--4 75d
Addendum: 
P: 325