Igitur Abraham de nocte

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
041r
Sequence: 
2
Feast: 
Dom. Quinquagesimae
Office/Mass: 
M
Genre: 
R
Position: 
3.2
Cantus ID: 
601088
Mode: 
6T
Addendum: 
P: 082