Ecce agnus dei qui tollit

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
023v
Sequence: 
28
Feast: 
Die 6 p. Nat. Domini
Office/Mass: 
M
Genre: 
R
Position: 
3.4
Cantus ID: 
006575
Mode: 
7
Addendum: 
P: 047