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 Antonio Lotti - Sonata for Flute, Cello and Harpsichord - I. Largo, J.S Bach - Cantata No.152 - VI. Duet for Soprano & Ba..., Hector Berlioz - Sylvia - Ballet Music - V. Pizzicato