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 Prokofiev Violin Concerto No. 2, Opus 63, Paganini Sonata Concertata M.S. 2 in A Major for Violin and Guitar, 1st movement, Mozart Sonata in G Major for Piano and Violin