Ubi est Abel frater tuus

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
037r
Sequence: 
5
Feast: 
Dom. Septuagesimae
Office/Mass: 
M
Genre: 
R
Position: 
3.4
Cantus ID: 
007804
Mode: 
7
Addendum: 
P: 074