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 Igudesman & Strauss: Pizzicato Polka, Irish Dance Choreography for Igudesman's Concerto for 4.5 Violins, Fasten Seatbelts - Aleksey Igudesman