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 J.B.Vanhal Kontrabass Konzert III. Allegro Finale, Hoffmeister: Violone Konzert in E flat Major I.Mov, Edicson Ruiz on ZDF by Sir Simon Rattle