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 I (part 2) Gliere horn concerto played by V. Polekh and conducted by R. Gliere. Lp record., Hermann Baumann plays Konzerststück Schumann for 4 horns, 2nd tempo. Lp record., Hermann Baumann plays 3rd movement of Schoeck Concert in d, Op. 65. Lp record.