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 How to Play the Irish Tenor Banjo : Banjo Basics, What Are the Different Types of 4-String Banjos? : Banjo Basics, How to Tune a 12-String Acoustic Guitar