Aperite illi portas justitiae

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
284v
Sequence: 
9
Feast: 
Pro defunctis
Office/Mass: 
X
Genre: 
A
Position: 
2
Cantus ID: 
001446
Mode: 
3
Differentia: 
4
Differentia database: 
1--k-k-k-h-k-j--4 96a
Addendum: 
P: 439