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 [2014 GMMFS 대관령국제음악제] Schubert Violin Sonata in A major, D.574, "Gran Duo", [2013 GMMFS 대관령국제음악제] Arensky Quartet in A minor for Violin, Viola, and Two Cellos, op.35