{
  "schemaVersion": 3,
  "cityId": "ossuaire",
  "seed": "ossuaire-stratum-nine",
  "title": "The Weight Below",
  "sourceWorld": {
    "worldId": "ossuaire",
    "hook": "Every surface ambition rests on a burial right.",
    "story": "Finite limestone strata hold the dead and determine where descendants may build; compulsory interment keeps carrion moths from consuming the living city."
  },
  "intent": {
    "oneLine": "A descending four-note survey call passes between wind over the plateau and the measured knocks of the burial works.",
    "keywords": [
      "limestone",
      "withheld space",
      "descending register",
      "iron shutters",
      "slow civic machinery"
    ],
    "avoid": [
      "choirs",
      "orchestral horror stingers",
      "wooden percussion",
      "constant bell tolling",
      "literal insect or voice recordings"
    ]
  },
  "musicalIdentity": {
    "bpm": 56,
    "swing": 0,
    "rootMidi": 38,
    "scale": "harmonic-minor",
    "signatureMotif": [
      0,
      -1,
      -3,
      -4
    ],
    "progression": [
      0,
      -3,
      -4,
      -1
    ],
    "phraseBars": 8
  },
  "worldFingerprint": {
    "meter": "4/4",
    "timingBehavior": "broken",
    "material": "stone-water",
    "spatialShape": "vertical-echo",
    "arrangementBehavior": "call-response",
    "register": "subterranean",
    "silence": 0.58
  },
  "samplePalette": [
    {
      "material": "mining",
      "intensities": [
        "medium"
      ]
    },
    {
      "material": "metal",
      "intensities": [
        "medium"
      ]
    },
    {
      "material": "plate",
      "intensities": [
        "heavy"
      ]
    }
  ],
  "soundEffects": {
    "building.place": {
      "label": "Foundation seated",
      "description": "A short mining impact marks stone set into an authorised footprint.",
      "sample": {
        "material": "mining",
        "intensity": "medium"
      },
      "gain": 0.52
    },
    "building.remove": {
      "label": "Seal released",
      "description": "A restrained heavy plate impact marks the release of a civic claim.",
      "sample": {
        "material": "plate",
        "intensity": "heavy"
      },
      "gain": 0.4
    },
    "placement.invalid": {
      "label": "Stratum reserved",
      "description": "A quiet dry metal impact indicates that the claim is blocked.",
      "sample": {
        "material": "metal",
        "intensity": "medium"
      },
      "gain": 0.18
    }
  },
  "spatialMix": {
    "nature": {
      "label": "Plateau beyond the claims",
      "description": "Sparse glass tones let the descending motif hang over wind texture and low haze chords.",
      "keywords": [
        "wind",
        "distance",
        "open limestone"
      ],
      "lead": "glass",
      "bass": "sub",
      "pad": "haze",
      "drums": "dust",
      "texture": "wind",
      "brightness": 0.24,
      "space": 0.88,
      "grit": 0.14,
      "density": 0.16
    },
    "city": {
      "label": "The interment register",
      "description": "Muted bells repeat the same descent above a slow bass grid, organ support and sparse mining and metal impacts.",
      "keywords": [
        "burial works",
        "measured",
        "enclosed"
      ],
      "lead": "bell",
      "bass": "round",
      "pad": "organ",
      "drums": "metal",
      "texture": "machinery",
      "brightness": 0.28,
      "space": 0.64,
      "grit": 0.32,
      "density": 0.36
    },
    "transition": {
      "curve": "equal-power",
      "description": "The same eight-bar phrase runs at both endpoints so distant wind and glass can yield continuously to the measured burial-works pulse without resetting the music."
    }
  }
}