This arrived as part of a new edition of Due antifone mariane "Salve Regina" and "Te decus virgineum" by Antonio Caldara, as published by Libreria Musicale Italiana. I just love how the chant master is showing off the great treasure of the monastery, the book with the music. The ability to write music this way had only been invented a few hundred years earlier. The staff was the greatest innovation for the arts in a 1000 years or maybe ever. And the book itself, the work of dozens of scribes and countless hours, was worth more than the building pictured here. This work he is pointing to was the internet of the late middle ages, the thing that transmitted the essential information and the sound of the faith from place to place.