Slightly more information at the site of St. John's College, Cambridge: http://www.joh.cam.ac.uk/earliest-known-piece-polyphonic-music-discovered http://www.joh

Slightly more information at the site of St. John's College, Cambridge: http://www.joh.cam.ac.uk/earliest-known-piece-polyphonic-music-discovered http://www.joh.cam.ac.uk/earliest-known-piece-polyphonic-mus...