Occurrit piissimae genetrici

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
244v
Sequence: 
12
Feast: 
Assumptio Mariae,8
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
203632
Mode: 
7
Differentia: 
1
Differentia database: 
1--l-l-m-l-k-j--4 142a
Addendum: 
P: 359