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 Royalty Free Music collection: "Hip Hop Beatz, Vol. 2" - Shockwave-Sound.com, Royalty-Free Music collection: "Dark Ages & Deep Secrets", Royalty Free Music - Energy Rock - Gut Busters Vol. 3