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 Tribal Techno Loops - Sample Pack - Percussion Drum Loops and Beats for Download, Polarized World - Cinematic Loops and Samples - Cinematic Sample Pack, Abyss - Deep Atmospheric Sounds and Soundscapes - Ambient Soundscapes - Ambient Sample Pack