{
  "schemaVersion": 3,
  "cityId": "polara",
  "seed": "polara-soft-machines-1974",
  "title": "Tomorrow, After Lunch",
  "sourceWorld": {
    "worldId": "polara",
    "hook": "An all-plastic lagoon city where the future feels like a shared conversation pit.",
    "story": "Rounded cooperative houses, rain-fed growing terraces and reclamation pods turn industry into domestic routine; the lagoon leaves space around a gentle civic pulse."
  },
  "intent": {
    "oneLine": "A leisurely electronic commons: rounded pulse melody, rubbery bass, warm organ chords and small dry clicks, opening into spacious lagoon haze beyond the city.",
    "keywords": [
      "1970s domestic futurism",
      "warm electronics",
      "rounded",
      "communal",
      "lagoon",
      "repairable machines"
    ],
    "avoid": [
      "metallic industrial crashes",
      "epic fantasy",
      "fast arpeggio walls",
      "ominous drones",
      "constant percussion",
      "literal field recordings not supplied by the engine"
    ]
  },
  "musicalIdentity": {
    "bpm": 86,
    "swing": 0.12,
    "rootMidi": 41,
    "scale": "mixolydian",
    "signatureMotif": [
      0,
      2,
      4,
      1,
      0
    ],
    "progression": [
      0,
      3,
      0,
      6
    ],
    "phraseBars": 8
  },
  "worldFingerprint": {
    "meter": "4/4",
    "timingBehavior": "tidal",
    "material": "glass-water",
    "spatialShape": "moving-harbour",
    "arrangementBehavior": "call-response",
    "register": "mid",
    "silence": 0.34
  },
  "samplePalette": [
    {
      "material": "soft",
      "intensities": [
        "heavy"
      ]
    },
    {
      "material": "generic",
      "intensities": [
        "light"
      ]
    }
  ],
  "soundEffects": {
    "building.place": {
      "label": "Seat the shell",
      "description": "A muted soft impact seats a molded module beneath the universal placement gesture.",
      "sample": {
        "material": "soft",
        "intensity": "heavy"
      },
      "gain": 0.48
    },
    "building.remove": {
      "label": "Release the collar",
      "description": "A small dry generic click accompanies releasing a reusable panel.",
      "sample": {
        "material": "generic",
        "intensity": "light"
      },
      "gain": 0.36
    },
    "placement.invalid": {
      "label": "No fit here",
      "description": "A quieter generic tap marks an incompatible fit without a harsh alarm.",
      "sample": {
        "material": "generic",
        "intensity": "light"
      },
      "gain": 0.16
    }
  },
  "spatialMix": {
    "nature": {
      "label": "Beyond the pontoons",
      "description": "Air texture, low haze chords and widely spaced glass-synth fragments of the same five-note tune suggest light over the lagoon; glass-water describes the engine timbre, not a change to plastic architecture.",
      "keywords": [
        "spacious",
        "tidal",
        "honey light"
      ],
      "lead": "glass",
      "bass": "round",
      "pad": "haze",
      "drums": "dust",
      "texture": "air",
      "brightness": 0.36,
      "space": 0.76,
      "grit": 0.04,
      "density": 0.2
    },
    "city": {
      "label": "The cooperative afternoon",
      "description": "A rounded pulse lead answers a rubber bass over warm organ chords; a restrained dust beat and occasional dry recorded clicks suggest comfortable, working plastic mechanisms.",
      "keywords": [
        "soft machines",
        "organ warmth",
        "gentle syncopation"
      ],
      "lead": "pulse",
      "bass": "rubber",
      "pad": "organ",
      "drums": "dust",
      "texture": "none",
      "brightness": 0.48,
      "space": 0.3,
      "grit": 0.08,
      "density": 0.46
    },
    "transition": {
      "curve": "equal-power",
      "description": "Both arrangements share the same eight-bar harmony and five-note motif continuously; moving inward reveals the steady civic rhythm while the spacious lagoon phrases recede."
    }
  }
}