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 Eunice 4-30-2012: Saint Saens Violin Concerto No. 3 - 3rd Movement, Eunice 12-07-2008: Vivaldi Violin Concerto in G Minor - Allegro, Esther 12-07-2008: Mendelssohn Violin Concerto in E minor 3rd movement