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 Johann Sebastian Bach - Aria dalle Variazioni Goldberg BWV 988, Recital Cipriana Smarandescu at CESMA (2014), F.J. Haydn - Concerto per clavicembalo in Re Maggiore