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. Pachelbel: Herzlich tut mich verlangen, Bach: O Gott, du Frommer Gott, BWV 767 Part 1, Dune: Prologue and Main Title (organ transcription)