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 Berlage Saxophone Quartet - American, VIRUS 10 mei 2012: The Royal Wind Music - "Ricercar del Primo Tono", Dutch Classical Talent finale 2014: Niek KleinJan