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 Brenda Lee - September in the Rain (1966), Hobby Horse (featuring Mary Hopkin) - Summertime, Summertime (1972), John McCormack - A Garden in the Rain (1929)