Requievit arca mense septimo

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
038v
Sequence: 
8
Feast: 
Dom. Sexagesimae
Office/Mass: 
M
Genre: 
R
Position: 
2.3
Cantus ID: 
601995
Mode: 
6T
Addendum: 
P: 077