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 Hans Knappertsbusch conducts Parsifal Act III Verwandlungsmusik - Transformation Music, Cheryl Studer & Wolfgang Müller-Lorenz TRISTAN UND ISOLDE "O sink' hernieder, Nacht der Liebe", Cheryl Studer sings Samuel Barber "The Monk and his Cat"