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 Adagio & Allegro Op. 70 for Cello and Piano : Schumann, Violin Concerto in E minor, Op. 64 :F. Mendelssohn: all 3 movements, Violin Concerto No. 9 2nd and 3rd Movement : Charles de Beriot