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 Sonny Terry Rock 'n' Boogie - 2nd part - 1st chorus IV & I Chords - Blues Harp - Intermediate level, IV-I Chords. Little Walter's side-to-side flutter - 2nd part. Blues Harp - Advanced level