Hello! This is the first ver of my customost sound mod!. it inculdes a whole bunch of songs. Inculding.
Doom aka knee deep in the dead
Quake 2
Watch_dogs
Killing Floor 2 aka kf2
Left 4 dead 1 and 2 aka Left 4 Arrested
Half-life 2 aka freeman
Team Fortress 2 aka blu team
Dying Light aka harran
Half Life Alyx aka your gonna need a gun
Maximum Action *aka maximum pay
Just place the CustomOstTracks mod in mods and download https://modworkshop.net/mod/27359 and put the CustomOstMod in your mods folder. then your good to go
if you already have customosttracks just place your previous songs if you have any in the new one

this mod uses the custom ost base