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 Master fiddle showcase [13 of 16]: Frank Ferrel - part 1, Master fiddle showcase [8 of 16]: Maisie Newell accompanied by Eric Dayan, Maine Fiddle Camp 2012