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 Linndrum LM-2 Functionality Demo with Digital BPM Readout, MPC Electronics MPC-1 Vintage Analog Drum Machine Demo w MIDI2SDS MIDI Retrofit [mpc1], Korg Polysix synthesizer demonstration