My very first payday soundtracks mod :)
Extract to mod_override folder (BeardLib version) or mods\CustomOSTTracks (Custom OST version)
Track list:
Setup: https://www.dropbox.com/s/323kz2u4os0clnz/22 My dearest Baumkuchen.mp3?dl=0
Control: https://www.dropbox.com/s/ajmxnop2hm3cbi2/36 Kaidan no Kaidan.mp3?dl=0
Anticipation: https://www.dropbox.com/s/osuo3i7qzn23frn/38 Ittoushou.mp3?dl=0
Assault: https://www.dropbox.com/s/o7ppb7kcdblhzxs/04 Fuwa Fuwa Time (Yui ver.).mp3?dl=0

SuperBLT and BeardLib are required (BeardLib version) or SuperBLT and Custom OST (https://modworkshop.net/mod/27359) (Custom OST version)

I'd recommend Custom OST because it's lightweight, has some cool feature (adjust volume, fade out, and so on)