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 Benjamin Britten - Serenade for tenor, horn and strings - 1st part (LIVE), Dmitri Shostakovich - Symphony No. 5 - Moderato - 1st part (LIVE)