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 Starcraft 2 Jukebox - Romeo Delta - Raw Power, CIV: Colonization Fife and Drum Music - To Arms, CIV: Colonization Fife and Drum Music - Road To Boston