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 Modifying the Yamaha PSS80 Electronic Synthesizer Keyboard, MARCY Cardio Mini Cycle Exercise Demonstration and Review, Record It All! with the Bell & Howell 87500 Vintage Cassette Tape Recorder