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 Descent music - Level 10 (PC-AdLib) (OPL3), Commander Keen 6 music - Keen hops across..., Heretic music - The Crypts (E1M7) (AdLib)