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 Laura Marzadori - Saint-Saëns, Violin Concerto n. 3, 2nd MOV., Laura Marzadori - Slavik, Violin Concerto N.2, Laura Marzadori - Slavik, Violin Concerto N.1