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 Bach-Godowsky - Aria from violin sonata no. 2, BWV 1003, transcribed for piano, Mozart - Piano Trio no. 6 in G major, K. 564, I. Allegro