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 AIGA-FAROS, Concerto for flute, violin & harpsichord by Grégoire Jeay, Handel Messiah, Bass Air: The Trumpet shall sound, Vivaldi, Largo from Concerto for Lute in D Major ~ House of Dreams