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: Partita "O Gott du frommer Gott, BWV 767" part 2 (Hauptwerk Virtual Pipe Organ), Ludwig Boslet Fantasie über "Maria dich lieben", Johann Sebastian Bach: Concerto a minor BWV 593, 3rd movement (Hauptwerk Virtual Pipe Organ)