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 Violin Grade3 A2 - Lady Hunsdon's Puffe, Violin Grade3 B2 - Jeanie with the Light Brown Hair, Violin exam pieces Grade 2 A1 - Rondo