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 G.F. Handel - Violin Sonata in A major / HWV372 Op.1 No.14, J. S. Bach - Sonata for Violin and Basso Continuo G-Major / BWV 1021, G. P. Telemann - Sonata for Violin, Cello and Basso Continuo F-major / No.6