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 Apple Creek Dulcimer - Folk, Old Time, Bluegrass, Smyrna, Music Lessons, Washburn B9 Banjo Demonstration Banjo Lesson Bluegrass Old Time Folk Americana Music Lessons