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 Joshua Bell - Saint-Saens - Introduction and Rondo Capriccioso, Bell - Chopin - Nocturne in C-sharp Minor, Vadim Repin - Tchaikovsky - Valse-Scherzo, Op. 34/2