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 Sonic 3D Blast - Green Grove 1 [teckworks cover], Mega Man 9 - Splash Blue [teckworks cover], Castlevania: Portrait of Ruin - The Gears Go Awry [teckworks cover]