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 Multi-Man Smash - Super Smash Bros. for 3DS / Wii U, Main Theme (Punch-Out!!) - Super Smash Bros. for 3DS / Wii U, Full Steam Ahead (Spirit Tracks) - Super Smash Bros. for 3DS / Wii U