O quam pulchra es casta

Source: 
Cambridge, University Library, Mm.ii.9
Folio: 
567
Sequence: 
16
Feast: 
XI milium Virginum
Office/Mass: 
M
Genre: 
A
Position: 
1.
Cantus ID: 
004069
Mode: 
7
Differentia: 
2
Differentia database: 
1--l-l-m-l-k-jk--4 144a