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 [Salvatore Accardo+I Musici] Vivaldi: Concerto for Violin in D, RV208a, [David Pokorný+Dušan Holý] Bohuslav Martinů: Sonata for Violin & Piano No.3, H.303, LIVE