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 microSAMPLER + BOSS Dr. Rhythm DR-670 = MIDI module sampling tutorial 2, KORG microSAMPLER + Energy XT = VST controlling and sampling tutorial