In medio ecclesiae aperuit os

Source: 
Kraków, Klastor OO. Karmelitów na Piasku (Carmelite Convent), Ms.2 (rkp. Perg. 14)
Marginalia: 
P
Folio: 
058r
Sequence: 
8
Feast: 
Joannis Evang.
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
003256
Mode: 
8
Differentia: 
G01
Differentia database: 
1--k-k-j-k-h-g--4 118a
Addendum: 
122