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 Theme from Piano Concerto No. 1, Tchaikovsky -- Accordion and Violin Duet, When I'm Sixty Four, Beatles Cover -- Accordion and Violin Duet, Largo -- Accordion and Violin Duet