O quam pulchra est casta

Source: 
Vorau, Stiftsbibliothek, 287 (olim XXIX)
Folio: 
238r
Sequence: 
9
Feast: 
Comm. plurimorum Virginum
Office/Mass: 
M
Genre: 
A
Position: 
1.1
Cantus ID: 
004069
Mode: 
7
Differentia: 
4b
Differentia database: 
1--l-l-m-l-kk-kkk--4 141f