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 May Flights of Angels Lead You on Your Way All Souls Day Latin Gregorian Chant, Regina Caeli Latin Chant Catholic Easter Marian Hymn Antiphon, Cantus Missae Benedictus Holy Mass Ed. Vat. XVIII Gregorian Chant