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 Michael Cleveland 8 String Fiddle at Lucketts Community Center, Roni Stoneman at the DC Bluegrass Festival 2015, Presley Barker in guitar contest Galax 2015