Custodiebant testimonia ejus

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
271r
Sequence: 
9
Feast: 
Comm. Apostolorum
Office/Mass: 
M
Genre: 
A
Position: 
2.6
Cantus ID: 
002083
Mode: 
4T
Differentia: 
3
Differentia database: 
1--l-k-l-m-k-h--4 T27aA
Addendum: 
P: 412