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 La manif pour tous du 26 mai 2013 à Paris - 1ère partie, Concert de chant grégorien à Notre Dame de Paris, St Pol de Léon. Les Mardis de l'orgue