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 Creepy Dark Ambient Music - Música Ambiental Oscura - Musique D'ambiance, Gothic Medieval Ambient Music - Música Medieval Oscura Gótica - Musique D'Ambience, Gothic Dark Ambient Music - Música Ambiental Oscura Gótica - Musique D'Ambiance