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 If you could read my mind - Fingerstyle Guitar - Sigma 000M-15, Martin D-15 Sound Sample / Fingerstyle Guitar, Sigma 000M-15 Sound Demo (Fingerstyle)