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 Steve Thomas swingin bluesy bluegrass fiddle solo at the 2009 MBOTMA festival, Tom Schaefer swing fiddle solo at the 2009 Minnesota Bluegrass and Old-Time Music Festival