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 Halo 3 ODST Soundtrack - Asphalt and Ablution, Halo 3 ODST Soundtrack - Special Delivery, Halo 3 ODST Soundtrack - Skyline