{
  "schemaVersion": 3,
  "cityId": "red-well",
  "seed": "red-well-ice-brigade-01",
  "title": "The Common Breath",
  "sourceWorld": {
    "worldId": "red-well",
    "hook": "Build a workers’ republic inside a Martian ice crater, where every new home makes a claim on the common breath.",
    "story": "Work brigades cross steep basalt terraces with ice, water and recycled panels; a shared rhythm and short sung-like instrumental call bind the open crater to warm common rooms."
  },
  "intent": {
    "oneLine": "A six-beat ice-hauling cadence becomes a warm communal work song, while its motif rings sparsely across the ravines.",
    "keywords": [
      "shared labor",
      "crater echo",
      "bolted metal",
      "ice light",
      "collective warmth",
      "patient resolve"
    ],
    "avoid": [
      "military march",
      "anthemic brass",
      "literal crowd or speech",
      "birdsong",
      "busy dance percussion",
      "generic space drone"
    ]
  },
  "musicalIdentity": {
    "bpm": 84,
    "swing": 0,
    "rootMidi": 36,
    "scale": "minor-pentatonic",
    "signatureMotif": [
      0,
      2,
      4,
      2,
      1
    ],
    "progression": [
      0,
      3,
      4,
      2
    ],
    "phraseBars": 8
  },
  "worldFingerprint": {
    "meter": "6/8",
    "timingBehavior": "steady",
    "material": "metal-cable",
    "spatialShape": "vertical-echo",
    "arrangementBehavior": "call-response",
    "register": "low",
    "silence": 0.32
  },
  "samplePalette": [
    {
      "material": "mining",
      "intensities": [
        "medium"
      ]
    },
    {
      "material": "plate",
      "intensities": [
        "heavy"
      ]
    },
    {
      "material": "glass",
      "intensities": [
        "light"
      ]
    },
    {
      "material": "metal",
      "intensities": [
        "medium"
      ]
    }
  ],
  "soundEffects": {
    "building.place": {
      "label": "Panel joined",
      "description": "A broad plate impact marks another part joining common use.",
      "sample": {
        "material": "plate",
        "intensity": "heavy"
      },
      "gain": 0.36
    },
    "building.remove": {
      "label": "Materials recovered",
      "description": "A firm mining contact marks salvage returned to the stock.",
      "sample": {
        "material": "mining",
        "intensity": "medium"
      },
      "gain": 0.29
    },
    "placement.invalid": {
      "label": "Path blocked",
      "description": "A small glass tick warns without masking the work rhythm.",
      "sample": {
        "material": "glass",
        "intensity": "light"
      },
      "gain": 0.12
    }
  },
  "spatialMix": {
    "nature": {
      "label": "Across the cut",
      "description": "Glass tones state the five-note call over low haze, with long gaps and occasional light metal reflections suggesting the scale of the exposed ice ravine.",
      "keywords": [
        "ice",
        "distance",
        "breath",
        "ravine"
      ],
      "lead": "glass",
      "bass": "sub",
      "pad": "haze",
      "drums": "dust",
      "texture": "wind",
      "brightness": 0.34,
      "space": 0.85,
      "grit": 0.12,
      "density": 0.15
    },
    "city": {
      "label": "Shared shift",
      "description": "Two groups of three beats support a low pulse call and warm organ answer. Metal and plate accents mark work without becoming a march.",
      "keywords": [
        "brigade",
        "canteen",
        "hoist",
        "heat"
      ],
      "lead": "pulse",
      "bass": "round",
      "pad": "organ",
      "drums": "metal",
      "texture": "machinery",
      "brightness": 0.44,
      "space": 0.35,
      "grit": 0.31,
      "density": 0.47
    },
    "transition": {
      "curve": "equal-power",
      "description": "Both arrangements share the same eight-bar roots and five-note call; the inside brings steady footfall and organ warmth forward as the distant ice tones recede."
    }
  }
}