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: Store - Courier - Gama Brothers with Nexon Sponsorship League Season 2, Dota 2: Store - Death Prophet - Augur's Curse Set, Dota 2: Store - Bounty Hunter - The Second Disciple Set