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 Dota 2 Dubstep - Aomey x Tinker - Pew Pew, Dota 2 Dubstep - Aomey x QoP - The Pain Teacher