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 Hardrive Bluegrass Band - 9 Pound Hammer @ Lomond Hotel 20 Aug 2011, Peter Rowan Bluegrass Band - Cold Rain and Snow @ Caravan Music Club, Melbourne 23 March 2012, Punch Brothers - Banjo Fiddle Duet @ Sheridan Opera House, Telluride 19 June 2011