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 "The World's Most Beautiful Woman" / Soprano Lina Cavalieri ~ L'Altra Notte (1910), Gervase ELWES: Blow, Blow, Thou Winter Wind (1916), Italian Coloratura Soprano Amelita Galli-Curci ~ Echo song (1921)