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 Aaron Rosand - Glazunov Violin Concerto in A minor, Op. 82 (excerpt), Aaron Rosand - Saint-Saens Violin Concerto No. 3 in B minor, Op. 61 (Excerpt)