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 Entry of the Gladiators by Julius Fucik (2009-'10 McNeil HS Wind Ensemble), Chant - Bob Mintezer (2008 TMEA Region 26 Jazz Ensemble), First Suite in E-flat (Intermezzo & March) by Gustav Holst (2009-'10 McNeil HS Wind Ensemble)