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 Stoner Metal Lesson - Doom Groove, Metal Riffing Techniques, Phrygian Improv Techniques - Rock & Metal Lead Guitar, Way of the Dark - D Minor Arpeggiation Sequences