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 Korg ESX Sample Start Point Manipulation for Evolving Synths, Korg DSS-1 Digital/Analog hybrid synth Demo - no external effects or processing, Modified and Circuit Bent BOSS CE-5 Chorus Pedal