Ubi duo vel tres congregati

Source: 
Oxford, Bodleian Library, MS. Canon. Liturg. 202 (olim 19314)
Folio: 
057v
Sequence: 
7
Feast: 
Fer. 3 Hebd. 3 Quad.
Office/Mass: 
E
Genre: 
A
Position: 
1
Cantus ID: 
005258
Mode: 
?
Differentia: 
*