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 [Hiyama Kiyoteru, VY2V3] Happy Synthesizer [Cover], [Kiyoteru, SF-A2 Miki] Happy Synthesizer [Vocaloid + MP3]