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 Ukulele Tutorial #54 (Count On Me, Bruno Mars), Ukulele Tutorial #88 (Save The World, Swedish House Mafia), Ukulele Tutorial #78 (Marvin's Room, Drake/JoJo/Chris Brown)