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 Anu Komsi singing John Zorn's Machine de l'Etre (excerpt), Ilja Gringolts playing Tchaikovsky's Violin Concerto / Lahti Symphony Orchestra (excerpt), Sergey Malov playing Bartók's Violin Concerto No. 2