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 Lullaby for a Princess (Vocal Cover), For Good (Wicked Duet Cover) - VocalScorePony & Turquoise Splash, Counting Sheep (Ft. Megaphoric, ISMBOF, and 4EverfreeBrony)