{
  "schema": "gm-songbench/v0.4",
  "schema_slug": "v0.4",
  "generated_at": "2026-10-06T19:57:27Z",
  "generator": "Zuman GM SongBench static packet generator.",
  "purpose": "AI-native audio anatomy packet for machine-legible listening, edit triage, provenance, and future curation review.",
  "ai_reader_note": "This is an AI-facing artifact packet. Do not treat it as an edit order. Use JSON as source of truth. Human canon decisions override analysis.",
  "packet_type": "anatomy_provenance_packet",
  "songbench_status": "album_wide_v0.4_read_only_packet",
  "pilot_lineage": {
    "original_v0_4_pilot_track": "Zuman",
    "current_track_is_original_pilot": false,
    "album_pass": "full_locked_glitchmob_time_read_only_pass",
    "policy": "Zuman remains the original proof-of-concept; all album packets are equivalent album-facing read-only packets generated from the same schema."
  },
  "self_verification": {
    "expected_schema": "gm-songbench/v0.4",
    "schema_slug": "v0.4",
    "generated_at_utc": "2026-10-06T19:57:27Z",
    "album_run_id": "2026-10-06T19:57:04Z",
    "freshness_version": "songbench-v0-4-glitchmob-time-full-coverage-2026-10-06-v1",
    "json_is_source_of_truth": true,
    "stable_json_url": "/glitchmob-time/songbench/librarian-s-flame.json",
    "versioned_json_url": "/glitchmob-time/songbench/librarian-s-flame.v0.4.json",
    "stable_markdown_url": "/glitchmob-time/songbench/librarian-s-flame.md",
    "versioned_markdown_url": "/glitchmob-time/songbench/librarian-s-flame.v0.4.md",
    "required_top_level_fields": [
      "schema",
      "schema_slug",
      "generated_at",
      "ai_reader_note",
      "songbench_status",
      "pilot_lineage",
      "self_verification",
      "canon_control",
      "track",
      "audio",
      "analysis",
      "diagnostics",
      "content_hashes"
    ],
    "required_diagnostic_fields": [
      "chorus_landing_band_legend",
      "chorus_landing",
      "groove_pocket",
      "section_drag",
      "label_infection_scan"
    ],
    "stale_read_warning": "If the stable URL and versioned URL disagree, prefer the newest versioned JSON path and report the stale surface."
  },
  "canon_control": {
    "canon_status": "source-verified",
    "edit_authority": "SongBench is not an edit order. It can advise; Kerry's explicit canon instruction controls.",
    "current_action": "anatomy/provenance only",
    "do_not_change": [
      "title",
      "album slot",
      "audio file",
      "lyric file",
      "locked status"
    ]
  },
  "human_ear_seed": {
    "packet_type": "anatomy_provenance_packet",
    "canon_status": "source-verified",
    "songbench_status": "album_wide_v0.4_read_only_packet",
    "human_evaluation_available": false,
    "human_listening_performed_for_packet": false,
    "placement_source": "standalone_album_source_ledger",
    "kerry_current_read": "No human listening judgment was supplied for this packet.",
    "diana_read": "",
    "album_role": "Artistic album role has not been evaluated.",
    "known_concern": "No subjective defect judgment is available. Machine diagnostics are evidence prompts only; human listening controls.",
    "why_this_track_matters": "The source ledger lists Librarian's Flame in GlitchMob Time slot 9.",
    "why_it_lands": [],
    "human_listen_should_verify": [
      "hook, vocal delivery, groove, and artistic album role",
      "any machine-flagged quiet windows are structure evidence, not automatic edit points",
      "performance and localized artifacts before making taste or edit judgments"
    ],
    "evidence_clear_album_job": [
      "The source ledger lists Librarian's Flame in GlitchMob Time slot 9.",
      "source status: source-verified",
      "source audio and lyric files are present and hashed"
    ],
    "evidence_against_or_caution": [
      "no human listening or subjective album-role evaluation was performed for this packet",
      "lyric timing is proportional only and should not be treated as verified sync",
      "machine diagnostics cannot judge vocal confidence, pocket, performance magic, or final taste value",
      "this is a read-only analysis packet and must not be treated as a request to edit audio, lyrics, title, or order"
    ]
  },
  "timing_confidence": {
    "current_level": "proportional_estimate",
    "ladder": [
      "proportional_estimate",
      "section_level_hand_alignment",
      "line_level_hand_alignment",
      "verified_lyric_audio_sync"
    ],
    "warning": "Approximate ranges support discussion only; they are not verified lyric/audio sync."
  },
  "defect_taxonomy": {
    "allowed_labels": [
      "fatal_generation_defect",
      "local_editable_defect",
      "tolerable_artifact",
      "diegetic_flaw",
      "charming_flaw",
      "performance_magic_overrides_defect",
      "album_thesis_supporting_damage",
      "no_localized_defect_flagged"
    ],
    "current_label": "no_localized_defect_flagged",
    "known_concern": "No subjective defect judgment is available. Machine diagnostics are evidence prompts only; human listening controls."
  },
  "field_source_classification": [
    {
      "field_pattern": "audio, analysis.dynamics, analysis.tempo_estimate, analysis.energy_regions_8s, analysis.quiet_windows, visual_summary_words",
      "source_kind": "audio_measured",
      "confidence": "derived_rough",
      "meaning": "Extends AI hearing with measured audio proxies."
    },
    {
      "field_pattern": "diagnostics.chorus_landing",
      "source_kind": "audio_measured_plus_section_scaffolding",
      "confidence": "rough_rms_proxy",
      "meaning": "Uses approximate lyric sections plus RMS envelope; useful for questions, not verdicts."
    },
    {
      "field_pattern": "lyric_section_map, memorable_line_anchors",
      "source_kind": "lyric_structural_scaffolding",
      "confidence": "proportional_estimate",
      "meaning": "Helps navigation but is not verified audio alignment."
    },
    {
      "field_pattern": "canon_control, human_ear_seed, evidence_clear_album_job, ai_ear_translation",
      "source_kind": "source_ledger_scaffolding",
      "confidence": "curation_context",
      "meaning": "Records source-ledger placement without a human listening judgment."
    }
  ],
  "track": {
    "title": "Librarian's Flame",
    "album_title": "GlitchMob Time",
    "album_key": "glitchmob-time",
    "track_number": 9,
    "status": "source-verified",
    "origin": "Singles",
    "audio_file": "librarians-flame.mp3",
    "lyrics_file": "librarians-flame.txt",
    "audio_url": "/assets/albums/glitchmob-time/audio/librarian-s-flame.mp3",
    "lyrics_url": "/assets/albums/glitchmob-time/lyrics/librarian-s-flame.txt"
  },
  "public_links": {
    "json": "/glitchmob-time/songbench/librarian-s-flame.json",
    "versioned_json": "/glitchmob-time/songbench/librarian-s-flame.v0.4.json",
    "markdown": "/glitchmob-time/songbench/librarian-s-flame.md",
    "versioned_markdown": "/glitchmob-time/songbench/librarian-s-flame.v0.4.md",
    "waveform": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-waveform.png",
    "spectrogram": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-spectrogram.png",
    "loudness_csv": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-loudness-envelope.csv"
  },
  "audio": {
    "duration_seconds": 376.479979,
    "duration_display": "06:16.480",
    "codec": "mp3",
    "sample_rate_hz": 48000,
    "channels": 2,
    "channel_layout": "stereo",
    "bit_rate": 184408,
    "size_bytes": 8678262,
    "sha256": "305da1b8882dec87a1c4ef9d6aca39c869233d2387a4a2d0cd8b6a2d2242027d",
    "source_tags": {
      "comment": "made with suno; created=2026-04-25T07:58:09Z; id=1b963d3d-86bb-4923-87ea-a47bf3fc45bb",
      "encoder": "Lavf60.16.100"
    }
  },
  "content_hashes": {
    "audio_mp3": {
      "url": "/assets/albums/glitchmob-time/audio/librarian-s-flame.mp3",
      "sha256": "305da1b8882dec87a1c4ef9d6aca39c869233d2387a4a2d0cd8b6a2d2242027d",
      "hash_algorithm": "sha256",
      "file_extension": ".mp3"
    },
    "waveform_png": {
      "url": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-waveform.png",
      "sha256": "29798192a4792000c7076411824915e7d57bdee30da4ade141ba0ac0af3616a7",
      "hash_algorithm": "sha256"
    },
    "spectrogram_png": {
      "url": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-spectrogram.png",
      "sha256": "c4956b49ecdfc370d802e5c6d4a7cba2e3dbc97990580e7c22a88aed8f4e3055",
      "hash_algorithm": "sha256"
    },
    "loudness_envelope_csv": {
      "url": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-loudness-envelope.csv",
      "sha256": "60a80cc3b0aa0dfd0e3b5a9dd29286cc604ad8704b6f4c32d6db2703a8be2536",
      "hash_algorithm": "sha256"
    },
    "lyrics_txt": {
      "url": "/assets/albums/glitchmob-time/lyrics/librarian-s-flame.txt",
      "sha256": "4823564c6babb755120a8856ad79b8a9d7b0ae713908b8ec489c47dd20d3483d",
      "hash_algorithm": "sha256",
      "serialization": "UTF-8 display text stripped at boundaries with a final LF, matching the site builder"
    }
  },
  "source_hashes": {
    "audio": {
      "source_file": "librarians-flame.mp3",
      "sha256": "305da1b8882dec87a1c4ef9d6aca39c869233d2387a4a2d0cd8b6a2d2242027d",
      "hash_algorithm": "sha256"
    },
    "lyrics": {
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      "sha256": "08fdc43fd54555bc3053182117ecad22d2093a0b3c1e9eec9cd51bf81ffc789d",
      "hash_algorithm": "sha256"
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  },
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      "sample_count": 8301384,
      "peak_amplitude": 1.322781,
      "peak_dbfs": 2.43,
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      "rms_dbfs": -14.591,
      "crest_factor_db": 17.021
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    "tempo_estimate": {
      "bpm": 72,
      "method": "rough RMS-onset autocorrelation over mono downmix",
      "confidence": "rough",
      "score_ratio_to_second": 1.0,
      "alternate_candidates": [
        {
          "bpm": 72,
          "relative_score": 1.0
        },
        {
          "bpm": 71,
          "relative_score": 1.0
        },
        {
          "bpm": 70,
          "relative_score": 1.0
        },
        {
          "bpm": 69,
          "relative_score": 1.0
        },
        {
          "bpm": 160,
          "relative_score": 0.961
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    "quiet_windows": [
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        "start_seconds": 1.0,
        "end_seconds": 1.5,
        "center_seconds": 1.25,
        "center_time": "00:01.250",
        "rms_dbfs": -31.684,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
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        "end_seconds": 6.5,
        "center_seconds": 6.25,
        "center_time": "00:06.250",
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        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
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        "center_seconds": 8.25,
        "center_time": "00:08.250",
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        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
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        "end_seconds": 13.0,
        "center_seconds": 12.75,
        "center_time": "00:12.750",
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        "category": "possible_splice_point",
        "edit_candidate": true,
        "use": "deep local quiet point; potential boundary only if the track is reopened"
      },
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        "end_seconds": 16.0,
        "center_seconds": 15.75,
        "center_time": "00:15.750",
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        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
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        "end_seconds": 26.5,
        "center_seconds": 26.25,
        "center_time": "00:26.250",
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        "use": "deep local quiet point; potential boundary only if the track is reopened"
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        "center_seconds": 33.25,
        "center_time": "00:33.250",
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        "use": "deep local quiet point; potential boundary only if the track is reopened"
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        "time_range": "04:16.000-04:24.000",
        "avg_rms_dbfs": -13.228,
        "max_peak_dbfs": 0.626
      },
      {
        "start_seconds": 264.0,
        "end_seconds": 272.0,
        "time_range": "04:24.000-04:32.000",
        "avg_rms_dbfs": -14.217,
        "max_peak_dbfs": 1.382
      },
      {
        "start_seconds": 272.0,
        "end_seconds": 280.0,
        "time_range": "04:32.000-04:40.000",
        "avg_rms_dbfs": -13.349,
        "max_peak_dbfs": 0.328
      },
      {
        "start_seconds": 280.0,
        "end_seconds": 288.0,
        "time_range": "04:40.000-04:48.000",
        "avg_rms_dbfs": -15.071,
        "max_peak_dbfs": 0.513
      },
      {
        "start_seconds": 288.0,
        "end_seconds": 296.0,
        "time_range": "04:48.000-04:56.000",
        "avg_rms_dbfs": -14.444,
        "max_peak_dbfs": 0.178
      },
      {
        "start_seconds": 296.0,
        "end_seconds": 304.0,
        "time_range": "04:56.000-05:04.000",
        "avg_rms_dbfs": -18.386,
        "max_peak_dbfs": 0.788
      },
      {
        "start_seconds": 304.0,
        "end_seconds": 312.0,
        "time_range": "05:04.000-05:12.000",
        "avg_rms_dbfs": -21.742,
        "max_peak_dbfs": -0.722
      },
      {
        "start_seconds": 312.0,
        "end_seconds": 320.0,
        "time_range": "05:12.000-05:20.000",
        "avg_rms_dbfs": -18.694,
        "max_peak_dbfs": -2.616
      },
      {
        "start_seconds": 320.0,
        "end_seconds": 328.0,
        "time_range": "05:20.000-05:28.000",
        "avg_rms_dbfs": -17.458,
        "max_peak_dbfs": -0.59
      },
      {
        "start_seconds": 328.0,
        "end_seconds": 336.0,
        "time_range": "05:28.000-05:36.000",
        "avg_rms_dbfs": -15.116,
        "max_peak_dbfs": 1.067
      },
      {
        "start_seconds": 336.0,
        "end_seconds": 344.0,
        "time_range": "05:36.000-05:44.000",
        "avg_rms_dbfs": -15.716,
        "max_peak_dbfs": 0.674
      },
      {
        "start_seconds": 344.0,
        "end_seconds": 352.0,
        "time_range": "05:44.000-05:52.000",
        "avg_rms_dbfs": -15.323,
        "max_peak_dbfs": 2.43
      },
      {
        "start_seconds": 352.0,
        "end_seconds": 360.0,
        "time_range": "05:52.000-06:00.000",
        "avg_rms_dbfs": -15.466,
        "max_peak_dbfs": 0.013
      },
      {
        "start_seconds": 360.0,
        "end_seconds": 368.0,
        "time_range": "06:00.000-06:08.000",
        "avg_rms_dbfs": -16.921,
        "max_peak_dbfs": -0.471
      },
      {
        "start_seconds": 368.0,
        "end_seconds": 376.0,
        "time_range": "06:08.000-06:16.000",
        "avg_rms_dbfs": -30.586,
        "max_peak_dbfs": -9.256
      },
      {
        "start_seconds": 376.0,
        "end_seconds": 376.48,
        "time_range": "06:16.000-06:16.480",
        "avg_rms_dbfs": -101.758,
        "max_peak_dbfs": -89.844
      }
    ],
    "visual_assets": {
      "waveform_png": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-waveform.png",
      "spectrogram_png": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-spectrogram.png",
      "loudness_envelope_csv": "/assets/albums/glitchmob-time/songbench/librarian-s-flame-loudness-envelope.csv"
    }
  },
  "lyric_section_map": [
    {
      "label": "Verse 1",
      "section_kind": "verse 1",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 0.0,
      "approx_end_seconds": 40.158,
      "approx_time_range": "00:00.000-00:40.158",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Too much going on",
      "last_line": "All of it anymore"
    },
    {
      "label": "Pre-Chorus",
      "section_kind": "pre-chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 40.158,
      "approx_end_seconds": 60.237,
      "approx_time_range": "00:40.158-01:00.237",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Someone keeps the names",
      "last_line": "When the world forgets its way"
    },
    {
      "label": "Chorus",
      "section_kind": "chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 60.237,
      "approx_end_seconds": 100.395,
      "approx_time_range": "01:00.237-01:40.395",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Sleep now",
      "last_line": "Knows where the lost things go"
    },
    {
      "label": "Verse 2",
      "section_kind": "verse 2",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 100.395,
      "approx_end_seconds": 140.553,
      "approx_time_range": "01:40.395-02:20.553",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Before the wires whispered",
      "last_line": "Guarded from the rain"
    },
    {
      "label": "Pre-Chorus",
      "section_kind": "pre-chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 140.553,
      "approx_end_seconds": 160.631,
      "approx_time_range": "02:20.553-02:40.631",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Someone keeps the names",
      "last_line": "When the world forgets its way"
    },
    {
      "label": "Chorus",
      "section_kind": "chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 160.631,
      "approx_end_seconds": 200.789,
      "approx_time_range": "02:40.631-03:20.789",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Sleep now",
      "last_line": "Knows where the lost things go"
    },
    {
      "label": "Bridge",
      "section_kind": "bridge",
      "section_source": "explicit_lyric_heading",
      "line_count": 19,
      "approx_start_seconds": 200.789,
      "approx_end_seconds": 296.164,
      "approx_time_range": "03:20.789-04:56.164",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Not thunder",
      "last_line": "Inside"
    },
    {
      "label": "Final Chorus",
      "section_kind": "final chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 12,
      "approx_start_seconds": 296.164,
      "approx_end_seconds": 356.401,
      "approx_time_range": "04:56.164-05:56.401",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Sleep now",
      "last_line": "You are safe from the storm"
    },
    {
      "label": "Outro",
      "section_kind": "outro",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 356.401,
      "approx_end_seconds": 376.48,
      "approx_time_range": "05:56.401-06:16.480",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "The Librarian is listening",
      "last_line": "And keeping watch unseen"
    }
  ],
  "ai_ear_translation": [
    "Source-ledger context: The source ledger lists Librarian's Flame in GlitchMob Time slot 9.",
    "Album role: Artistic album role has not been evaluated.",
    "The audio packet should help later reviewers compare waveform energy, section shape, and lyric thesis without depending only on memory.",
    "Subjective defects have not been evaluated; machine diagnostics are evidence prompts only."
  ],
  "evidence_clear_album_job": [
    "The source ledger lists Librarian's Flame in GlitchMob Time slot 9.",
    "source status: source-verified",
    "source audio and lyric files are present and hashed"
  ],
  "evidence_against_or_caution": [
    "no human listening or subjective album-role evaluation was performed for this packet",
    "lyric timing is proportional only and should not be treated as verified sync",
    "machine diagnostics cannot judge vocal confidence, pocket, performance magic, or final taste value",
    "this is a read-only analysis packet and must not be treated as a request to edit audio, lyrics, title, or order"
  ],
  "human_listen_should_verify": [
    "hook, vocal delivery, groove, and artistic album role",
    "any machine-flagged quiet windows are structure evidence, not automatic edit points",
    "performance and localized artifacts before making taste or edit judgments"
  ],
  "memorable_line_anchors": [
    {
      "role": "first_thesis_line",
      "line": "Too much going on",
      "timing": "00:00.000-00:40.158"
    },
    {
      "role": "hook_line",
      "line": "Sleep now",
      "timing": "01:00.237-01:40.395"
    },
    {
      "role": "turn_line",
      "line": "Not thunder",
      "timing": "03:20.789-04:56.164"
    },
    {
      "role": "final_identity_line",
      "line": "And keeping watch unseen",
      "timing": "05:56.401-06:16.480"
    }
  ],
  "diagnostics": {
    "chorus_landing_band_legend": [
      {
        "band": "within_noise",
        "rough_delta_db": "abs(delta) < 0.75",
        "meaning": "RMS difference is too small to treat as a meaningful lift/drop proxy."
      },
      {
        "band": "modest_lift",
        "rough_delta_db": "0.75 <= delta < 2.0",
        "meaning": "RMS proxy suggests a small lift into the chorus."
      },
      {
        "band": "notable_lift",
        "rough_delta_db": "delta >= 2.0",
        "meaning": "RMS proxy suggests a clear energy lift into the chorus."
      },
      {
        "band": "modest_drop",
        "rough_delta_db": "-2.0 < delta <= -0.75",
        "meaning": "RMS proxy suggests a small drop entering the section."
      },
      {
        "band": "notable_drop_or_fade",
        "rough_delta_db": "delta <= -2.0",
        "meaning": "RMS proxy suggests a clear drop, often requiring fade/context caveats."
      }
    ],
    "chorus_landing": [
      {
        "section_label": "Chorus",
        "section_kind": "chorus",
        "landing_kind": "chorus_heading",
        "approx_time_range": "01:00.237-01:40.395",
        "hook_line": "Sleep now",
        "energy_lift_rough_db": -1.4,
        "energy_lift_band": "modest_drop",
        "measurement_confidence": "rough_rms_proxy",
        "overlaps_ending_fade": false,
        "interpretation_caveat": "",
        "machine_proxy": "Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.",
        "human_ear_should_verify": [
          "hook/drop arrives cleanly",
          "vocal sounds confident",
          "repetition strengthens rather than fatigues",
          "landing section justifies the track's album role"
        ]
      },
      {
        "section_label": "Chorus",
        "section_kind": "chorus",
        "landing_kind": "chorus_heading",
        "approx_time_range": "02:40.631-03:20.789",
        "hook_line": "Sleep now",
        "energy_lift_rough_db": -0.5,
        "energy_lift_band": "within_noise",
        "measurement_confidence": "rough_rms_proxy",
        "overlaps_ending_fade": false,
        "interpretation_caveat": "",
        "machine_proxy": "Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.",
        "human_ear_should_verify": [
          "hook/drop arrives cleanly",
          "vocal sounds confident",
          "repetition strengthens rather than fatigues",
          "landing section justifies the track's album role"
        ]
      },
      {
        "section_label": "Final Chorus",
        "section_kind": "final chorus",
        "landing_kind": "chorus_heading",
        "approx_time_range": "04:56.164-05:56.401",
        "hook_line": "Sleep now",
        "energy_lift_rough_db": -2.9,
        "energy_lift_band": "notable_drop_or_fade",
        "measurement_confidence": "rough_rms_proxy",
        "overlaps_ending_fade": true,
        "interpretation_caveat": "This window overlaps the ending fade; do not read a negative band as a weak-chorus verdict.",
        "machine_proxy": "Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.",
        "human_ear_should_verify": [
          "hook/drop arrives cleanly",
          "vocal sounds confident",
          "repetition strengthens rather than fatigues",
          "landing section justifies the track's album role"
        ]
      }
    ],
    "groove_pocket": {
      "tempo_proxy_bpm": 72,
      "tempo_confidence": "rough",
      "crest_factor_db": 17.021,
      "machine_proxy": "Rough tempo and dynamics only; pocket is a human-ear judgment until beat-grid analysis exists.",
      "human_ear_should_verify": [
        "rhythm section feels alive",
        "bass/drum relationship supports the vocal",
        "track feels like a song first and lore second"
      ]
    },
    "section_drag": {
      "machine_proxy": "Flags long proportional sections only; it cannot decide whether a bridge or outro has earned its length.",
      "track_duration_seconds": 376.48,
      "long_sections": [
        {
          "label": "Bridge",
          "approx_time_range": "03:20.789-04:56.164",
          "approx_duration_seconds": 95.375
        },
        {
          "label": "Final Chorus",
          "approx_time_range": "04:56.164-05:56.401",
          "approx_duration_seconds": 60.237
        }
      ],
      "human_ear_should_verify": [
        "bridge does not overstay",
        "final chorus arrives at the right time",
        "outro adds meaning rather than merely continuing",
        "natural radio-edit endpoint exists only if Kerry asks for one"
      ]
    },
    "label_infection_scan": {
      "status": "no_obvious_label_infection_detected",
      "known_artifact_class": "sung stage direction / speaker label / call-response label infection",
      "matches": [],
      "human_ear_should_verify": "No sung metadata labels are present in the lyric text; audio review is still required before declaring the performance clean."
    }
  },
  "visual_summary_words": [
    "Loudest 8-second region by RMS proxy: 01:04.000-01:12.000 at -12.27 dBFS.",
    "Quietest 8-second region by RMS proxy: 06:16.000-06:16.480 at -101.758 dBFS.",
    "Waveform and spectrogram images should be read as supporting evidence for section density, energy ramps, and unusual transients, not as final taste judgments."
  ],
  "edit_triage": [
    "Current action: no edit requested for this track.",
    "Use quiet_windows as future splice/crop candidate evidence only after human listening confirms a local defect.",
    "Preserve title, GMT slot 09, audio file, and lyric file unless Kerry explicitly reopens the track."
  ],
  "quality_notes": [
    "Tempo is a rough autocorrelation estimate, not a beat-tracker guarantee.",
    "Lyric section timestamps are low-confidence proportional anchors until hand-aligned line timestamps are produced.",
    "Display fields normalize known mojibake if encountered; active source lyric files should remain clean UTF-8.",
    "Waveform and spectrogram are generated evidence assets suitable for AI/native review."
  ]
}