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 [Live] Bohemian Rhapsody by Queen for 5 Cellos - String Theory, [Live] Merry Go Round of Life From Howl's Moving Castle for 5 Cellos - String Theory