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 [DEMO] DM1: the Drum Machine for iPad (Fingerlab) TR-808 kit, [DEMO] iGrand (Free version) - IK Multimedia, Jam - Latin Jazz Style / Synth Solo / using Sonar 7 / Percussion Solo