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 JS Bach's "Toccata and Fugue in D Minor" for solo violin (performed/arranged by Stuart Carlson), Stuart Carlson performs Haydn's "Violin Concerto in G" - 1st mvmnt