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 E-MU Ultra Sampler - Demo #6 (Hardware Sampler), E-MU Ultra Sampler - Demo #5 (Hardware Sampler), E-MU Ultra Sampler - Demo #3