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 Unaccompanied Sonata #1 in G minor, 2. Fugue, J.S. Bach; Ryan Shannon (age 17), violin, Violin Concerto #2 in D minor, 1. Allegro Moderato, H. Wieniawski; Ryan Shannon, Violin