videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including 024 Ritus communionis (Pater Noster) Solemn Pontifical Mass in Gregorian Chant, 032 Ritus conclusionis Solemn Pontifical Mass in Gregorian Chant, 033 Cantus claudere Solemn Pontifical Mass in Gregorian Chant