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 Easy Piano Tutorial: "Jingle Bells" (Michael Buble Rendition) [HD], The Sound Of Music: Sixteen Going On Seventeen (Piano Cover), The Sound Of Music: So Long, Farewell (Piano Cover)