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 P.D.Q. Bach - A little nightmare music (1983) - Cavatina for Schlafer - "Nature gave us eyes to see", Francois Boieldieu - Concert for Harp & Strings in C - III. Allegro agitato (Marisa Robles), Gioachino Rossini - Ermione - "Sei vendicta" (Chris Merritt & Cecilia Gasdia)