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 Noobokai - Dance of Forsaken Flowers (Vayne and Irelia Dubstep), Noobokai - Deep Into the Freljord (Freljord Dubstep/Drum'n'bass), Noobokai - Slow Down (Rengar Dubstep + Metal)