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 Chapter 4: KB - Two Fingers Skipping Two (Right Hand), Chapter 6: YW - Looks Like Y and W (Right Hand), Chapter 3: DMZ - Two Fingers Skipping One (Right Hand)