Instead of voting on one “song”, I think we should add quite a lot of them from different authors- and play them at different times.
Spookypen: Play randomly as ambience. Stunningly beautiful!
Graham (2): Dawn music, after the first week has passed. Only applies if you’re on the first Z-level (so not in a mine, lab, etc)
Graham (3): Long haul- on a moving vehicle for more than 5 in-game minutes without seeing a zombie. Only happens once per day!
Graham (5): LMOE Shelter, cabin, bottom of nuclear silo
Justin Healy: Played if you have a friendly dog within 50 tiles of you when you wake up from sleep. Ignores graham2 if it’s the case.
Science Lab Funeral: Going down the first stairs in the lab, to going down the third set of stairs. If the finale is before then, Disarray4 plays on that floor.
Rev6: Ambience in autumn and winter.
djrodw: Finale is reached- plays until you exit the lab. IIRC when you reach the finale, tons of enemies spawn.
Disarray 1: Spiral Cavern… or maybe just when you find an artifact. I hope people implement the Spiral Cavern sometime though!
Disarray 2: Entering a school or FEMA camp.
Disarray 3: Plays when midnight comes and you’re awake, or the end of every season.
Disarray 4: Level 3 to finale, and if the finale is on floor 3 or 2 it plays there instead of Funeral.
Marius Piece1: MINE FINALE!!! Also, as you intended, cataclysm theme. Maybe it would work well on the title screen?
Marius Piece2: Other parts of the mine. Reminds me so much of HL2, except creepier… mines are fucking creepy.
Marius ambient1: YES. Entering a swamp should be this terrifying. Gets tribal later, if you somehow survive that long.
Marius ambient2: Labs can go to, like, level -6. If you get to -5 or below (in any method), PLAY THIS SHIT.
Marius ambient3: Strange Temple, or when you see a flaming eye, or otherwise get “otherworldly attention/feel watched”
I managed to fit in most of these- some of Graham Lloyd’s didn’t seem fit completely though. These are just my opinions- if the authors of any of these don’t want them where I recommend them, they don’t have to go there!
You’re all brilliant musicians though, and I applaud your awesome effort.