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 Lee Oskar Demonstrates - The Harmonic Minor Harmonica, Lee Oskar QuickGuide - Major Diatonic Harmonica For Guitar - Folk, Blues, Country, Rock / Pop, Lee Oskar QuickGuide - Major Diatonic Harmonica For Ukulele - Folk, Blues, Country, Rock / Pop