This mod lowers the stealth music intensity for No Rest for the Wicked, making it easier to hear the guards while lugging away the bags and just makes it a more enjoyable experience for me.
Stealth intensity 2 lowered to 1
3 to 2
4 to 2
5 to 3
This means that that stealth music will never go to intensity 4 or 5.
Stealth music in Payday 3 is divided into 5 intensities and the game switches the one playing after you've archived certain objectives.