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 Tchaikovsky: Rococo Variations part 1/2, solist: László Fenyő, Bach: Double Violin Concerto in D Minor BWV 1043 Part 2., Mozart: Violin Concerto in G Major K 216 Part 1.