History - Amen amen... quia plorabitis

Jan 24, 2021 (xmarteo)

Removed source, because this piece has rythmic signs etc. and needs to be retranscribed for the modern AM

sources
[{"chant_id":"2669","source":"3","page":"825","sequence":"1","extent":"1"},{"chant_id":"2669","source":"1748","page":"286474","sequence":"01","extent":"02"}]