History - Confortamini
Jun 29, 2020 (octaviusarc)
Added CantusID and source (1974 - GR)
cantusid
g00509
sources
[{"chant_id":"290","source":"2","page":"10","sequence":"1","extent":"2"},{"chant_id":"290","source":"4","page":"26","sequence":"1","extent":"1"}]