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 Dame Kiri Te Kanawa sings "The Virgin Washes the Swaddling", Dame Kiri Te Kanawa sings "Misera, dove son" K.369 - Mozart - Nobel Jubilee Concert, Dame Kiri Te Kanawa in Otello-Concert with Sir Georg Solti, Luciano Pavarotti & Leo Nucci - II