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 Nicola Porpora - "Sonata for Violin and Harpsichord" Sonata VI in C major, G.F.Handel - Violin Sonata in D major, Op.1, A.Vivaldi - Concerto for Violin and Strings "in due cori" in B flat major, RV 583