So I decided to try putting these cool songs into Payday 2, yet the problem is that I kinda suck at this so it is what it is.
It's just my attempt so it's not going to be perfect or at least good, I think so at least.
If anyone wants to fix this to make it sound better then go ahead.
Also I'm not sure about copyright thing but I think it shouldn't be a problem.

Check Dependencies & Instructions for needed mods. It's just SuperBLT and BeardLib.

Songs:
"Let There Be Chaos" By ksho: https://www.youtube.com/watch?v=s5JdvfpuuZ0
"Chaos Insurgency Assault Theme (Version 2)"("Rush Of The Chaos") By Axel Nosferatu: https://www.youtube.com/watch?v=KRK8q4DobkI
"SCP rBreach Revamp: Main Theme" By Axel Nosferatu: https://www.youtube.com/watch?v=2cDg8Ax0QNI (Not really a Chaos Insurgency themed song but it sounds cool in the menu so I thought I'll drop that in.)
I also wanted to add this but I kinda gave up: https://www.youtube.com/watch?v=mHxfvaHH0MI&t=1s

If there's something wrong then tell me bout it idk. ¯_ (..)/¯