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 Tera violinist: Mendelssohn Quartet #1 in E flat, Op 12 at Stanford Advanced Suzuki Institute, Tera: Mozart violin concerto #3 in G Major, K216, 1st movement, with cadenza, EYSO at Benaroya -- The Sound of Music