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 MET Opera Council Winners: Rebecca Pedersen, Massenet's "Le Cid", The Emerson Quartet: Schubert Slow 2nd mvt of the Roseamunde Quartet, Diane Cluck: Red August, Live in The Greene Space