Three things! Two I jammed on hard, one that was more just the inspiration for my FL jam.
Inspired by: The Conet Project (official site, listen) -- the prompt I went with was "numbers stations" so, y'know, obviously.
As far as "background music while I wrote/designed,"
Gost's Behemoth (listen here, especially the title track)
and L'Enfant De La Forêt's ABRAXAS (listen here, especially "Flowers of Flesh and Bone" and "The Birth of All Evil")
If you're a Perturbator fan, L'Enfant is the same guy! This work tends to be moodier, slower, darker.