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 Violin & Cello Duo - Pachelbel Canon in D /AKG 220, Canon in D by Johann Pachelbel (violin & guitar duo), The Bittersweet Symphony - Electric Violin Cover