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 Polo Horse "Wind Tunnel" - Volkswagen [Commercial 2014], Horse Jumping with Malin Baryard & H&M Tornesch [H&M Life], Cycling Scotland : See cyclist. Think Horse. [Commercial 2013]