History - Deus tuorum militum (Alter tonus)
May 18, 2021 (Jacques Perriere)
Liber Usualis page 1127
sources
[{"chant_id":"12521","source":"3","page":"1127","sequence":"1","extent":"2"},{"chant_id":"12521","source":"48","page":"[143.2]","sequence":"01","extent":"12"}]