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 Korngold Violin Concert - 1st Movement - Pip Clarke (violin), Pip Clarke - Camille Saint-Saëns: Sonata for violin and piano n.1 Op. 75 - IV. Allegro molto, Korngold Violin Concert - 3rd Movement - Pip Clarke (violin)