Hey,Thanks for Answering, had no idea energy crisis have its own Safe room Music.
But even if some of the music works on custom Campaigns, It's a Great mod either way.

energy crisis uses its own safe room music

unless the custom campaign has its own custom safe room music then im assuming it plays that over l4d2's

the only thing that works on custom campaigns is the l4d2 safe room music cause unlike the l4d1 campaigns all the l4d2 campaigns share the same one

hey,question here, does this work on any campaign or just those that you mention?
Because y was playing energy Crisis and when y enter the end safe room of Chapter 1, it play out a Different music, not the one of vanilla left 4 dead.