just adds the track "General Release" by Mike Klubnika as a menu theme to payday 2
i don't own the track obviously, so go support mike's work

to install just shove it in your mod_overrides folder

https://www.youtube.com/watch?v=GXvHmYwcmF0&list=PL39jRdjFRxGRzwi3Vd_k5frovImgWirXb&index=2