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 Sofia Gubaidulina : 10 Preludes for solo cello - 5. sul ponticello - ordinario - sul tasto, Sofia Gubaidulina : 10 Preludes for solo cello - 8. arco - pizzicato