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 [SSBB Tutorial] Target Smash Level 1 in under 15 Seconds, [MKWii] "Tut, Tut, Looks like Rain" (A Thundercloud Montage), [SSBB Tutorial] Target Smash Level 4 in under 32 Seconds