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 Impressions (Mvmt. I) by Nicolas Martynciow, "bounce!" for snare drum and pre-recorded audio by Anthony M. Di Bartolo, Duo for Snare Drum and Marimba by Anthony M. Di Bartolo