The Hum was never supposed to behave like music. It needed to feel less like something playing in a room and more like something the body had noticed before the mind had.
This is the first entry in The Crypt: a place for notes from inside the development of Nocturnis — the choices, experiments and pieces of research that sit underneath the finished work.
The sound beneath the story.
Across the Nocturnis universe, the Hum is more than atmosphere. It is part of the underlying language of the world: persistent, physical and difficult to locate. The idea has always been that hearing it is only one part of the experience.
PRIMARY BAND 40–60 Hz
SECONDARY ELEMENT 17 Hz
FUNCTION PERCEPTION / PRESSURE / UNEASE
FINAL DESIGN WITHHELD
Low frequencies are useful creatively because they suggest weight. They can make a space feel occupied even when nothing visible has changed. But the goal isn't simply to make something low and ominous. The Hum has to become recognisable without turning into a conventional musical motif.
The audience should not always be certain whether they heard it — or felt it.
Recognition before explanation.
The same principle runs through the stories themselves. Nocturnis is interested in the moment before certainty: when a person knows something has shifted but cannot yet prove what it is.
So the Hum should work in the same way. Sometimes foregrounded. Sometimes almost absent. Sometimes only implied by the behaviour of a room, a character, or the sudden awareness that silence no longer feels silent.
An evolving experiment.
This is development rather than doctrine. The frequencies, textures and physical behaviour of the Hum will continue to change when the work moves from page to production and can finally be tested in real spaces, through real speakers, with a sound designer who can tell me which of my ideas are inspired and which are acoustically unhinged.
That process is exactly what The Crypt is for: not pretending the work arrived fully formed, but keeping a record of how it becomes itself.