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 S.Karg-Elert - Sinfonische Kanzone, C.M.Weber - Fantaisie sur le Freidchűtz, P.Hurel - Èolia pour Flute Solo