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 Super Smash Bros: Project M Tournament - Losers Round 1 - Expansion Pak, Super Smash Bros: Project M Tournament - Grand Finals - Expansion Pak, Super Smash Bros: Project M Tournament - Losers Finals - Expansion Pak