Isti sunt*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
068r
Sequence: 
3
Feast: 
Sabbato in Albis
Office/Mass: 
M
Genre: 
R
Position: 
2
Cantus ID: 
007012
Mode: 
*
Addendum: 
P: 136