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 Mordor - LOTR: War of the Ring Soundtrack, Spellforce: Breath of Winter Soundtrack - 07 Into the Abyss, Spellforce: Breath of Winter Soundtrack - 05 Freeing of Fial Darg