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 J.S. Bach - BWV 1044 - (2) Adagio...e dolce A minor / a-moll, J.S. Bach - BWV 875a - Praeambulum d-moll / D minor, J.S. Bach - BWV 674 - Kyrie, Gott heiliger Geist