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 Cello Bow Control Exercises with Kirin McElwain, Effective Use of Melody - Part 2, Auld Lang Syne for Ukulele - Simple Chords and Strumming Pattern for Complete Beginners