Cantus: A Database for Latin Ecclesiastical Chant - Inventories of Chant Sources | Cantus Manuscript Database https://cantus.uwaterloo.ca/
"Cantus is a database of the Latin chants found in manuscripts and early printed books, primarily from medieval Europe. This searchable digital archive holds inventories of antiphoners and breviaries -- the main sources for the music sung in the Latin liturgical Office -- as well as graduals and other sources for music of the Mass."
@sapiens What a wonderful resource! I enjoyed the short video intro explaining how a database of Latin chants started for academic research has proven useful for art historians, museum curators, choir directors... https://www.youtube.com/watch?v=iMmGrUxhPj4
& examples integrating modern score & words with original spelling & manuscript images. I've bookmarked the new website, https://cantusdatabase.org/