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 JS Bach - Trio Sonata in C Minor from The Musical Offering, BWV 1079 - Flute, Violin, Piano, Johann Gottlieb Goldberg - Trio Sonata in C Major - Flute, Violin, Continuo, Ferde Grofé - Table d'Hôte - Flute, Violin and Viola