History - Sedebit Dominus
Oct 10, 2019 (nokel81)
Added Liber Usualis as source
sources
[{"chant_id":"1229","source":"2","page":"642","sequence":"2","extent":"1"},{"chant_id":"1229","source":"3","page":"1714","sequence":"1","extent":"1"},{"chant_id":"1229","source":"4","page":"391","sequence":"1","extent":"1"}]