Expugna impugnantes me

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
031v
Sequence: 
20
Feast: 
Fer. 2 per annum
Office/Mass: 
M
Genre: 
A
Position: 
1.2
Cantus ID: 
002801
Mode: 
1
Differentia: 
7
Differentia database: 
1--h-h-g-f-g-h--4 64b
Addendum: 
P: 063