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 Boris Pigovat - "Music of Sorrow and Hope", Poem for Symphony Orchestra (2011) Part 1 of 2., Ch. de Beriot, Scene de Ballet, Seoyoung Park, 10 years