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 Music of Central Asia Vol. 10: Borderlands: Wu Man and Master Musicians from the Silk Route, Frog Follower: Smithsonian Scientist Justin Touchon, Inside the National Zoo's Hormone Lab (Giant Panda Pregnancy Watch)