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 Bohuslav Martinů - Sonata for violin and piano no.3, 3 mouvement, live, Josef Suk - Four Pieces for Violin and Piano op.14 - Allegro vivace