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 Clocks in Motion: Gravity - Marc Mellits, Clocks in Motion - Percussion Quartet Mvmt. 2 - Charles Wuorinen, Steve Reich's "Mallet Quartet" performed by Clocks in Motion Percussion