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 Umineko no Naku Koro ni Chiru BGM - discolor, Umineko no Naku Koro ni Chiru EP7 BGM - rain, Umineko no Naku Koro ni Chiru EP6 BGM - battle field