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 Korg Volcas & Family - Effects for synthesizer: Pt.6 Reverb, Korg Volca Sample - Audio - sampling workflow, Korg Volca Sample / Beats - Rhythm patterns pt2: More Classic rhythm patterns