Trent Codices
The so called Trent Codices are the biggest source of sacred music of the 15th century. They are available online and downloadable, some pages are linked to performances!
Januar 2009
https://www.cultura.trentino.it/portal/server.pt/community/manoscritti_musicali_trentini_del_%27400/814/sfoglia_codice/22660?Codice=Tr87