This was supposed to be a natural "forest" sounding track but then somehow evolved into this when it didn't work out. If you don't know what the "morning alarms in Pyongyang" is, here's a video of them: https://www.youtube.com/watch?v=2_ixmhCFYgg
Of course it doesn't quite sound like that. I thought I'd have to add a fuckton of reverb but I didn't! For the spooky siren sounds, I used the Celestial and Swirling presets of the Sytrus plugin. That's about it.