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 Lesson 3 Harmonic mixing/key change, for the dj, American Audio Radius 1000 midi. A look at the FX's, DJ Tutorial on Mixing Drum and Bass with Dub step video 2