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 Frozen in Time [HD] - Time Warp Explorer - New! Ambient Music Calm Relaxing, Solar Cycle - Time Warp Explorer - Smooth Ambient Rock Music, Relaxing Music!, Calm Reflections - Time Warp Explorer - Ambient Music, Relaxing Nature music!