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 Ensemble Dialoghi - Reinecke Trio (2/4) for Piano, Clarinet and Horn, Op. 274, Ensemble Dialoghi - Reinecke Trio (1/4) for Piano, Clarinet and Horn, Op. 274