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 Hogwarts Academy for Music and Magic Harry (alias Orfeo) Mandozzi Cello, (2/4) Grieg Sonata for Cello and Piano Op. 36 Orfeo Mandozzi Cello Caroline Clipsham Piano