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 "Turkey in the Straw" - Katrina Nicolayeff - Camp Sumner Sessions, Carol Ann Wheeler on "Fiddle vs. Violin", "Brilliancy" - Old-time Fiddle Jam Session at Jeff and Eileen's