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 Brain / Karajan, Mozart Horn Concerto No.3 n E flat major K 447, Frank Proto (*1941) Sonata 1963, Dennis Brain, Mozart Horn Concerto No.1 n D major K 412