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 Sergiu Schwartz - Mendelssohn - Violin concerto, III. (excerpt), Mendelssohn Concerto for Violin, Piano and String Orchestra, I. Allegro, Sergiu Schwartz - Brahms Violin Sonata No. 3, I Allegro