I've been on a massive nostalgia trip listening to the cod zombies songs and stuff. So I figured, why not make a few edits.
For Undone the transition between both tracks was not done in the way I usually do, where the tracks are split at a point where they sound identical, for a smooth transitition.
The reason for this is the background layers of both versions are different, meaning any split and merging of the tracks is blatantly obvious to the listener.
To counter this I added the audio that plays for the: game start, round start and round end of the Nacht Der Untoten Zombies map as a way to bridge both versions of the track and just let the tracks play out in full.
Undone is such a vibe honestly.