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 Beginning 5 String Banjo Bluegrass Finger Picking (Some Basics), Gina Le Faux Plays a Schult Violin, Gina Le Faux Plays a Bridge 'Starry Night' Violin