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 Czardas by Vittorio Monti for double bass and guitar, Vault Video: Frank Proto - Carmen Fantasy, movement 1, J.S. Bach - Suite for Solo Cello no. 1, Prelude