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 MOZART, Concerto for 2 fortepianos KV 365, Rondeaux.Allegro, MOZART, Fortepiano Concerto in B flat KV 456, Allegro vivace, mvt. 2/2.