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 Mozart - Horn concerto n°3 - Brain / Philharmonia / Karajan, Mozart - Horn concerto n°2 - Brain / Philharmonia / Karajan, Schumann - Adagio & Allegro op.70 - Brain / Britten