Been playing recently, decided to go back and look at some beta footage I made back in 2016 for build r15431. And I heard some very different combat music in that video, hadn't even realized it changed.

Pure curiosity about if it was a licensing thing or just a matter of taste, or some other reason.

The music we were using in early builds was premade licensed music. Most of that was eventually replaced by music that our sound guy Dan Bewick composed specifically for us.