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 Masha Diatchenko (13 years old) plays Brahms Violin Concerto Op. 77, 3rd mov., Masha Diatchenko (14 years old) plays Bach Double Violin Concerto BWV. 1043, 1st mov.