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 BREASTS OF TIRESIAS (2011): Final Scene - Central City Opera, CENTRAL CITY OPERA -- Amadigi di Gaula (2011): Clip 4 - Pena tiranna (Act II aria, Dardano), Via resti servita, madama brillante, THE MARRIAGE OF FIGARO (2014) - Central City Opera