Ecce mitto angelum meum qui

Source: 
Firenze (Florence), Arcivescovado - Biblioteca, s.c.
Folio: 
006r
Sequence: 
9
Feast: 
Fer. 4 Hebd. 2 Adv.
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
002525
Mode: 
7
Differentia: 
3
Differentia database: 
1--l-l-m-l-k-jh--4 143b