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 Mendelssohn - violin concerto Mvt.1 - Han, Wieniawski Violin Concerto No.2 - Peter Han, 13 years old boy, Bach - Violin Concerto in E major Mvt.1 - Allegro