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 001 SciFi - Free Space Background Music For Games and Movies - Funny Song, Royalty Free Background Music - 010 Mystic - Instrumental for Exciting Parts in Video and Game, 005 Sound - Free Background Music for Horror Movies - Horror Sound Scary Sound Paranormal