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 Bach Double Concerto for Oboe and Violin - Mov 1.mpg, Strauss - Pizzicato Polka at Anker Buch celebration concert 2010 in Copenhagen, Bach Double Concerto for Oboe and Violin - Mov 2.mpg