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 Steve Reich: Sextet (3rd, 4th & 5th movement), Maurice Ravel: Le Tombeau de Couperin, Maurice Ravel: Le tombeau de Couperin - Prelude