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 1980(?) MTI Auto Orchestra 16R Analog Drum & Bass Machine, 1972 ARP Pro-Soloist vs. 1979 ARP Pro-DGX Analog Synthesizer Monophonic Preset, 1972 ROLAND TR-77 Analog Drum Machine