{
  "schemaVersion": 3,
  "cityId": "nimbus-crown",
  "seed": "nimbus-crown-seven-weather-cycle-01",
  "title": "The Weather Turns Below",
  "sourceWorld": {
    "worldId": "nimbus-crown",
    "hook": "Build a city across the clouds that harvests sunshine, brews rainbows and rain, and catches thunderbolts before the weather breaks.",
    "story": "Weatherwright households tend a drifting archipelago of cloudstone shelves around a cumulonimbus heart, turning sunshine, rain, rainbows and dangerous Static into a dependable weather cycle for the lands below."
  },
  "intent": {
    "oneLine": "A buoyant six-beat weather motif passes from distant glass and rain into measured civic machinery, copper strikes and a rare crowning bell.",
    "keywords": [
      "open sky",
      "weather craft",
      "prismatic",
      "buoyant",
      "charged",
      "civic ritual"
    ],
    "avoid": [
      "generic fantasy harp",
      "continuous storm effects",
      "bombastic thunder drums",
      "whimsical circus music",
      "busy random percussion"
    ]
  },
  "musicalIdentity": {
    "bpm": 84,
    "swing": 0.08,
    "rootMidi": 43,
    "scale": "mixolydian",
    "signatureMotif": [
      0,
      2,
      4,
      7,
      5
    ],
    "progression": [
      0,
      3,
      4,
      1
    ],
    "phraseBars": 8
  },
  "worldFingerprint": {
    "meter": "6/8",
    "timingBehavior": "tidal",
    "material": "glass-water",
    "spatialShape": "wide-shimmer",
    "arrangementBehavior": "evolving",
    "register": "high",
    "silence": 0.32
  },
  "samplePalette": [
    {
      "material": "glass",
      "intensities": [
        "light"
      ]
    },
    {
      "material": "metal",
      "intensities": [
        "medium"
      ]
    },
    {
      "material": "bell",
      "intensities": [
        "heavy"
      ]
    }
  ],
  "soundEffects": {
    "building.place": {
      "label": "Cloudstone seated",
      "description": "A clear metal contact and rising signal mark a weatherwork settling onto its shelf.",
      "sample": {
        "material": "metal",
        "intensity": "medium"
      },
      "gain": 0.44
    },
    "building.remove": {
      "label": "Weather bell released",
      "description": "A restrained bell impact accompanies a structure leaving the civic weather cycle.",
      "sample": {
        "material": "bell",
        "intensity": "heavy"
      },
      "gain": 0.34
    },
    "placement.invalid": {
      "label": "Unsafe charge",
      "description": "A small glass tick sits beneath the engine's dry refusal gesture.",
      "sample": {
        "material": "glass",
        "intensity": "light"
      },
      "gain": 0.13
    }
  },
  "spatialMix": {
    "nature": {
      "label": "Open cloud shelves",
      "description": "Widely spaced glass tones trace the shared five-note weather motif above a soft rain texture and slow hazy harmony, leaving broad pockets of sky between gestures.",
      "keywords": [
        "spacious",
        "rain veil",
        "sunlit",
        "drifting"
      ],
      "lead": "glass",
      "bass": "sub",
      "pad": "haze",
      "drums": "dust",
      "texture": "rain",
      "brightness": 0.72,
      "space": 0.88,
      "grit": 0.08,
      "density": 0.18
    },
    "city": {
      "label": "Weatherwright shift",
      "description": "The same motif becomes a measured instrument pulse over paired six-beat bass figures, quiet metal braces and organ-like civic harmony; a deep bell marks the completed weather cycle.",
      "keywords": [
        "copper brace",
        "instrument panel",
        "communal",
        "charged"
      ],
      "lead": "pulse",
      "bass": "round",
      "pad": "organ",
      "drums": "metal",
      "texture": "machinery",
      "brightness": 0.58,
      "space": 0.4,
      "grit": 0.26,
      "density": 0.5
    },
    "transition": {
      "curve": "equal-power",
      "description": "Both endpoints keep the same eight-bar Mixolydian weather cycle; moving inward brings the six-beat machinery and bass into focus while the glass notes and rain veil remain as distant air."
    }
  }
}