Horror and suspense scoring rarely lean on melody. The tension comes from a filter that never resolves, a drone that drifts flat, a pulse that almost but doesn't sync to picture — the same long-form curve thinking that defines a modular patch.
Automation gets treated as a mixing chore, added after the arrangement is finished. Designed at the same time as the notes, it's the difference between a cue that sits flat and one that actually moves.