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 Collings OM2H - Pete Huttlinger - "The Water is Wide", Living Machines: The Art and Craft Behind Collings Electric Guitars, Collings 290 - Mitch Watkins - Jazz Demo