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 Vivaldi - L'Estro Armonico, Concerto No. 1 in D major for four violins and strings Op. 3, RV 549, Vivaldi - Cello Sonata No. 4 in B flat major, RV 45