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 Tap DJ - The Ultimate DJ app for iPhone and iPod touch, Tap DJ App GyroScratch Demo - The Ultimate Pocket DJ App for iPhone and iPod touch, Tap DJ Live Demo - The Ultimate iPhone DJ App