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 Mendelssohn Violin Concerto in E Minor, Op. 64: Peter Mellinger, Clocks by Coldplay -- for Violin and Cello, Bruch Violin Concerto in G Minor: Finale