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 Electro-Harmonix 22500 | Dual Stereo Looper, Electro-Harmonix The Wiggler | all-tube tremolo and vibrato, Hudson Electronics BG-24V-PG