O quantus erat luctus omnium

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
265v
Sequence: 
6
Feast: 
Martini
Office/Mass: 
M
Genre: 
R
Position: 
3.2
Cantus ID: 
007295
Mode: 
4
Addendum: 
P: 401