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 Beethoven - Romance in G Major No.1 - Vladimir Omeltchenko & Natalia Petrovskaya, Mozart - Concerto No. 3 G-dur for Violin & Orchestra - 3 rd Mov., Mozart - Concerto No. 3 G-dur Violin & Orchestra - 2nd Mov.