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 Peter Chang YTSO 2011 violin audition, Peter (14) plays Brahms violin concerto 1st mvt - 1/2, Peter (12) plays Tchaikovsky Violin Concerto 3rd.