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 Humoresques pour piano, Op. 126, 3rd movement by Jean Absil, Bordel - 1900 from Histoire Du Tango by Astor Piazzolla, Salut d'Amour, Op. 12 by Elgar