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 Tuning Forks on Resonators, Introduction to Tuning Forks from the National Museum of American History, Birthplace of the Modern Archtop Guitar, New York, NY: Places of (Musical) Invention