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 ThreeChordGuitar.com: Speed of the Sound of Loneliness, ThreeChordGuitar.com: Sam Stone John Prine Guitar Lesson, ThreeChordGuitar.com: Fingerpicking Blues in E