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 Beatbox tutorial - Electro scratch, Beatbox With Me - Advanced beat 1 with inward rimshot (inward K snare), Fat Tony, LuckeyMonkey, Arjun, and ChoiceBeats - Final Jam