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 R.Dubugnon: "3 Pieces" | Théotime Voisin (d. bass), Schumann, Cellokonzert 1/3 - Thierry Roggen, Kontrabass