History - Sanctissimus namque Gregorius

Jan 25, 2021 (xmarteo)

Changed usage to Tropa and removed source which corresponded to the un-troped piece

incipit
Sanctissimus namque Gregorius

office-part
vatp

sources
[{"chant_id":"4654","source":"1","page":"1","sequence":"0","extent":"1"}]

tags
["Dominica I Adventus"]