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 Joan Sutherland - Bell Song from Lakmé, Joan Sutherland - Lakmé's Dead "Tout est fini...", Montserrat Caballé - Dove Sono? "Le Due Ilustri Rivali"