Low-level JSON for 645ad212-ee3c-4a8f-8b1f-df38a9f3fd4a

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        "tuning_diatonic_strength": 0.610941112041,
        "tuning_equal_tempered_deviation": 0.0507701300085,
        "tuning_frequency": 440.763122559,
        "tuning_nontempered_energy_ratio": 0.688516378403
    }
}
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