History - Solemnitas
Oct 02, 2015 (Motchipou)
Added ref. to 1961 - The Liber Usualis (Solesmes), pp. 1676A-1676B
sources
[{"chant_id":"420","source":"2","page":"620","sequence":"2","extent":"2"},{"chant_id":"420","source":"3","page":"1676A","sequence":"1","extent":"2"}]