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 Team Fortress 2 music - Soldier of Dance (Kazotsky Kick), Cars video game - Rooster Tails, Animusic "Fiber Bundles" plus Yamaha PSR-530 sounds