It changes the sound of the drill to the spiderman pizza theme. Unzip it and drop that file into the mod_overrides folder in your payday 2 assets (make sure that there is not a spiderman pizza drill file in a spiderman pizza drill file tho). If theres no mod_overrides folder create one :D Oh and here is the original music: https://www.youtube.com/watch?v=czTksCF6X8Y