History - O lux beata Trinitas (aestivalis)
Apr 27, 2026 (Br. Bernard Delgado-Braun OSB)
added additional location in the same source
sources
[{"chant_id":"3267","source":"7","page":"163","sequence":"2","extent":"1"},{"chant_id":"3267","source":"7","page":"533","sequence":"1","extent":"1"}]