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 Schubert: Piano Sonata in A Minor D. 845 1st movement (Ethan James McCollum), Ronald Smith plays Alkan: Chant in E Major Op. 38a No. 1