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 R.A. Moog Model 10 Modular Synthesizer at Switched On, Mode Machines SID Synthesizer | Switched On Demos | NAMM 2013 (Direct Audio), A Hybrid Digisound & Aries Modular Synthesizer at Switched On