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 Larry Keel w/ Sam Bush "Daybreak In Dixie" 3.21.14 Georgia Theatre, Keller & The Keels - Jam Cruise 10 - "Chicken Train" with Anders Beck of Greensky Bluegrass