O quam pulchra est casta

Source: 
Rouen, Bibliothèque municipale, 248 (olim A. 339)
Folio: 
163r
Sequence: 
4
Feast: 
Comm. plurimorum Virginum
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
004069
Mode: 
7
Differentia: 
C1
Differentia database: 
1--l-l-m-l-k-jk--4 144a