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 Claude Debussy: Quartet in G Minor, Op. 10 - 4th Mvmt., Faure - Violin Sonata No. 1 in A, Op. 13 Allegro quasi presto