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 Hotone EKO Echo Pedal demonstration by Guitarcube, Cordoba C5 Classic Guitar demonstration by Guitarcube, Maton Guitar ECJ85 Demo - Joe & CC demonstration by Guitarcube