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 César Franck: Prélude pour l'Ave Maris Stella, Vom Himmel hoch, o Engel, kommt, Jürgen Borstelmann: Die Nacht ist vorgedrungen (Meditation)