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 Alesis SR-16 Drum Machine Built-In Demo, Official Korg X-911 Guitar Synthesizer Audio Demo (1979) Part 1, Ensoniq SQ-(1/2/R)32-voice/KS-32 "Desi Slam" Demo