Ecce gens quae prius monstra

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
209v
Sequence: 
16
Feast: 
Gregorii
Office/Mass: 
M
Genre: 
A
Position: 
1.5
Cantus ID: 
201461
Mode: 
5
Differentia: 
1a
Differentia database: 
1--k-k-l-j-kJ-h--4 129o
Addendum: 
P: 287