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 'Violin app' featured in Apple iPhone 5S TV ad (Reaktor, Native Instruments), Motion Synth setup - Insert iPhone/iPod touch and control sound app (GarageBand example), Violin sound played expressively via the Motion Synth