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 An Italian Violin, probably by Lorenzo Storioni, Cremona c. 1800 || Lot 257, An Italian Violin by Paolo Antonio Testore, Milan 1726 || Lot 209, A Fine Italian Violin by Francesco Ruggieri, Cremona circa 1715 || Lot 108