O ineffabilem*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
266v
Sequence: 
8
Feast: 
Martini,8
Office/Mass: 
M
Genre: 
A
Position: 
1.
Cantus ID: 
004033
Mode: 
*
Addendum: 
P: 403