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 Polka Buzz 1-10 The Knewz, Polka Buzz 7-31-16 The Knewz, Polka Buzz 6-26-16 Stephanie America's Polka Sweetheart