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 10 Minutes of Video Game Music - Heavy Blow from Gradius Rebirth, 10 Minutes of Video Game Music - Sand Storm from Gradius III, 10 Minutes of Video Game Music - Free Flyer from Gradius; PC Engine version