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 Mu-tron III vs Mu-Tron 3X mit Clavinet Sound - Deutsch HD, Mu-tron III vs Mu-Tron 3X mit Guitar Sound - Deutsch HD