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 J. S. Bach - Air on the G String / Solo Violin Tomaz Mancini & Saso Debelec with Double Bass, NOVEMBERFEST - Yasuo Kuwahara - Orkester Mandolina Ljubljana - dirigent Andrej Zupan, Daj mi Micka pejneze nazaj - Slovenian traditional music at Workshop Liesing