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 Noodling on my Hughes & Kettner Statesman Dual EL84 (2nd Channel) - Sound example, Blues Backing Track in A, Folk Song - Michael Behm - Solo Guitar (Furch OM 34)