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 Castlevania: Order of Ecclesia Music - "Lament to the Master", Castlevania: Order of Ecclesia Music - "Shadow´s Stronghold", Castlevania: Order of Ecclesia Music - "Stone holds a grudge"