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 Mais ce Dieu, que peut-il pour moi - Placido Domingo (tenor) y Samuel Ramey (bajo), Pourquoi me reveiller - Rolando Villazón (tenor), Stille Nacht (Noche de paz) (Silent night) - Adrian Erod (bajo), Grace Bumbry (mezzosoprano), Annely Peebo (soprano) y Juan Diego Florez (tenor)