O regem caeli cui talia

Source: 
Oxford, Bodleian Library, MS. Canon. Liturg. 202 (olim 19314)
Folio: 
027r
Sequence: 
7
Feast: 
In tempore Nat.
Office/Mass: 
E
Genre: 
A
Position: 
9
Cantus ID: 
004077
Mode: 
?
Differentia: 
*