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 Maurice Ravel - Les entretiens de la Belle et la Bete, Suite, Johann Sebastian Bach - Fugue in g minor, BWV 1000, Bach - Duet for Flute and Violin, H.598 (Wq.140)