{
  "schema": "gm-songbench/v0.4",
  "schema_slug": "v0.4",
  "generated_at": "2026-06-20T01:37:05Z",
  "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_friction_product_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": "2026-06-20T01:37:05Z",
    "album_run_id": "2026-06-20T01:36:42Z",
    "freshness_version": "songbench-v0-4-fp-full-coverage-2026-06-15-v1",
    "json_is_source_of_truth": true,
    "stable_json_url": "/friction-product/songbench/friction-product.json",
    "versioned_json_url": "/friction-product/songbench/friction-product.v0.4.json",
    "stable_markdown_url": "/friction-product/songbench/friction-product.md",
    "versioned_markdown_url": "/friction-product/songbench/friction-product.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": "album_locked",
    "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": "album_locked",
    "songbench_status": "album_wide_v0.4_read_only_packet",
    "kerry_current_read": "Friction Product is locked in Friction Product slot 9; this packet records read-only album-facing evidence.",
    "diana_read": "",
    "album_role": "Title-track pivot: conflict becomes the mechanism that makes form.",
    "known_concern": "No localized defect is asserted by this packet. Machine diagnostics are evidence prompts only; human listening controls.",
    "why_this_track_matters": "Title-track pivot: conflict becomes the mechanism that makes form.",
    "why_it_lands": [
      "Title-track pivot: conflict becomes the mechanism that makes form.",
      "Its SongBench packet documents measured audio evidence around the locked album placement without changing canon.",
      "Its lyric-section map is navigational scaffolding until hand-aligned lyric/audio sync exists."
    ],
    "human_listen_should_verify": [
      "the hook and vocal delivery support the stated album role",
      "any machine-flagged quiet windows are structure evidence, not automatic edit points",
      "the track feels like a song first and archive/provenance second"
    ],
    "evidence_clear_album_job": [
      "locked Friction Product slot 9",
      "Title-track pivot: conflict becomes the mechanism that makes form.",
      "included in the current Friction Product sequence with audio and lyrics present"
    ],
    "evidence_against_or_caution": [
      "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 localized defect is asserted by this packet. 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": "human_canon_scaffolding",
      "confidence": "curation_context",
      "meaning": "Anchors machine evidence to Kerry/canon context."
    }
  ],
  "track": {
    "title": "Friction Product",
    "album_title": "Friction Product",
    "album_key": "friction-product",
    "track_number": 9,
    "status": "locked",
    "origin": "Zuman v1",
    "audio_file": "Friction Product.mp3",
    "lyrics_file": "Friction Product.txt",
    "audio_url": "/assets/albums/friction-product/audio/friction-product.mp3",
    "lyrics_url": "/assets/albums/friction-product/lyrics/friction-product.txt"
  },
  "public_links": {
    "json": "/friction-product/songbench/friction-product.json",
    "versioned_json": "/friction-product/songbench/friction-product.v0.4.json",
    "markdown": "/friction-product/songbench/friction-product.md",
    "versioned_markdown": "/friction-product/songbench/friction-product.v0.4.md",
    "waveform": "/assets/albums/friction-product/songbench/friction-product-waveform.png",
    "spectrogram": "/assets/albums/friction-product/songbench/friction-product-spectrogram.png",
    "loudness_csv": "/assets/albums/friction-product/songbench/friction-product-loudness-envelope.csv"
  },
  "audio": {
    "duration_seconds": 256.079979,
    "duration_display": "04:16.080",
    "codec": "mp3",
    "sample_rate_hz": 48000,
    "channels": 2,
    "channel_layout": "stereo",
    "bit_rate": 192171,
    "size_bytes": 6151422,
    "sha256": "4dd8599b391b2cd49052ad92a14d0471d688185b0d85b4a05caae4a1864232d5",
    "source_tags": {
      "comment": "made with suno; created=2026-04-14T03:50:45Z; id=ad3eba13-d4e1-4066-9845-73229c4070cd",
      "encoder": "Lavf60.16.100"
    }
  },
  "content_hashes": {
    "audio_mp3": {
      "url": "/assets/albums/friction-product/audio/friction-product.mp3",
      "sha256": "4dd8599b391b2cd49052ad92a14d0471d688185b0d85b4a05caae4a1864232d5",
      "hash_algorithm": "sha256"
    },
    "waveform_png": {
      "url": "/assets/albums/friction-product/songbench/friction-product-waveform.png",
      "sha256": "74ca8c4fa9d203eec8a9621e6983eaaf1b625c2e6d8da29e15fbc1416a21c632",
      "hash_algorithm": "sha256"
    },
    "spectrogram_png": {
      "url": "/assets/albums/friction-product/songbench/friction-product-spectrogram.png",
      "sha256": "af7d80281c97c09d48027589841e183f057568709dd03a19961d24a35e61306c",
      "hash_algorithm": "sha256"
    },
    "loudness_envelope_csv": {
      "url": "/assets/albums/friction-product/songbench/friction-product-loudness-envelope.csv",
      "sha256": "3c49c7e6472fd924428ed169e9bdd1622ba270af13b132b96df39dc577b8971b",
      "hash_algorithm": "sha256"
    }
  },
  "analysis": {
    "dynamics": {
      "sample_rate_hz": 22050,
      "sample_count": 5646564,
      "peak_amplitude": 1.226724,
      "peak_dbfs": 1.775,
      "rms_amplitude": 0.230326,
      "rms_dbfs": -12.753,
      "crest_factor_db": 14.528
    },
    "tempo_estimate": {
      "bpm": 126,
      "method": "rough RMS-onset autocorrelation over mono downmix",
      "confidence": "rough",
      "score_ratio_to_second": 1.0,
      "alternate_candidates": [
        {
          "bpm": 126,
          "relative_score": 1.0
        },
        {
          "bpm": 125,
          "relative_score": 1.0
        },
        {
          "bpm": 124,
          "relative_score": 1.0
        },
        {
          "bpm": 123,
          "relative_score": 1.0
        },
        {
          "bpm": 122,
          "relative_score": 1.0
        }
      ]
    },
    "quiet_windows": [
      {
        "start_seconds": 0.5,
        "end_seconds": 1.0,
        "center_seconds": 0.75,
        "center_time": "00:00.750",
        "rms_dbfs": -100.191,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
      },
      {
        "start_seconds": 2.0,
        "end_seconds": 2.5,
        "center_seconds": 2.25,
        "center_time": "00:02.250",
        "rms_dbfs": -22.262,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
      },
      {
        "start_seconds": 3.5,
        "end_seconds": 4.0,
        "center_seconds": 3.75,
        "center_time": "00:03.750",
        "rms_dbfs": -20.58,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
      },
      {
        "start_seconds": 6.0,
        "end_seconds": 6.5,
        "center_seconds": 6.25,
        "center_time": "00:06.250",
        "rms_dbfs": -23.451,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
      },
      {
        "start_seconds": 7.5,
        "end_seconds": 8.0,
        "center_seconds": 7.75,
        "center_time": "00:07.750",
        "rms_dbfs": -23.067,
        "category": "intro_silence",
        "edit_candidate": false,
        "use": "intro or setup silence"
      },
      {
        "start_seconds": 138.5,
        "end_seconds": 139.0,
        "center_seconds": 138.75,
        "center_time": "02:18.750",
        "rms_dbfs": -23.419,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 155.0,
        "end_seconds": 155.5,
        "center_seconds": 155.25,
        "center_time": "02:35.250",
        "rms_dbfs": -23.048,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 209.0,
        "end_seconds": 209.5,
        "center_seconds": 209.25,
        "center_time": "03:29.250",
        "rms_dbfs": -20.306,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 211.5,
        "end_seconds": 212.0,
        "center_seconds": 211.75,
        "center_time": "03:31.750",
        "rms_dbfs": -19.925,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 213.0,
        "end_seconds": 213.5,
        "center_seconds": 213.25,
        "center_time": "03:33.250",
        "rms_dbfs": -20.69,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 221.0,
        "end_seconds": 221.5,
        "center_seconds": 221.25,
        "center_time": "03:41.250",
        "rms_dbfs": -20.341,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      },
      {
        "start_seconds": 237.0,
        "end_seconds": 237.5,
        "center_seconds": 237.25,
        "center_time": "03:57.250",
        "rms_dbfs": -21.006,
        "category": "natural_section_boundary_or_low_energy_moment",
        "edit_candidate": false,
        "use": "local energy dip; useful as structure evidence"
      }
    ],
    "energy_regions_8s": [
      {
        "start_seconds": 0.0,
        "end_seconds": 8.0,
        "time_range": "00:00.000-00:08.000",
        "avg_rms_dbfs": -29.9,
        "max_peak_dbfs": -8.623
      },
      {
        "start_seconds": 8.0,
        "end_seconds": 16.0,
        "time_range": "00:08.000-00:16.000",
        "avg_rms_dbfs": -13.575,
        "max_peak_dbfs": -1.638
      },
      {
        "start_seconds": 16.0,
        "end_seconds": 24.0,
        "time_range": "00:16.000-00:24.000",
        "avg_rms_dbfs": -12.475,
        "max_peak_dbfs": -0.973
      },
      {
        "start_seconds": 24.0,
        "end_seconds": 32.0,
        "time_range": "00:24.000-00:32.000",
        "avg_rms_dbfs": -12.158,
        "max_peak_dbfs": -0.088
      },
      {
        "start_seconds": 32.0,
        "end_seconds": 40.0,
        "time_range": "00:32.000-00:40.000",
        "avg_rms_dbfs": -12.05,
        "max_peak_dbfs": -0.933
      },
      {
        "start_seconds": 40.0,
        "end_seconds": 48.0,
        "time_range": "00:40.000-00:48.000",
        "avg_rms_dbfs": -11.987,
        "max_peak_dbfs": -0.208
      },
      {
        "start_seconds": 48.0,
        "end_seconds": 56.0,
        "time_range": "00:48.000-00:56.000",
        "avg_rms_dbfs": -11.848,
        "max_peak_dbfs": -1.03
      },
      {
        "start_seconds": 56.0,
        "end_seconds": 64.0,
        "time_range": "00:56.000-01:04.000",
        "avg_rms_dbfs": -12.011,
        "max_peak_dbfs": -0.76
      },
      {
        "start_seconds": 64.0,
        "end_seconds": 72.0,
        "time_range": "01:04.000-01:12.000",
        "avg_rms_dbfs": -13.175,
        "max_peak_dbfs": -0.44
      },
      {
        "start_seconds": 72.0,
        "end_seconds": 80.0,
        "time_range": "01:12.000-01:20.000",
        "avg_rms_dbfs": -11.713,
        "max_peak_dbfs": -0.751
      },
      {
        "start_seconds": 80.0,
        "end_seconds": 88.0,
        "time_range": "01:20.000-01:28.000",
        "avg_rms_dbfs": -13.273,
        "max_peak_dbfs": -1.443
      },
      {
        "start_seconds": 88.0,
        "end_seconds": 96.0,
        "time_range": "01:28.000-01:36.000",
        "avg_rms_dbfs": -12.963,
        "max_peak_dbfs": -1.443
      },
      {
        "start_seconds": 96.0,
        "end_seconds": 104.0,
        "time_range": "01:36.000-01:44.000",
        "avg_rms_dbfs": -12.491,
        "max_peak_dbfs": -1.15
      },
      {
        "start_seconds": 104.0,
        "end_seconds": 112.0,
        "time_range": "01:44.000-01:52.000",
        "avg_rms_dbfs": -12.573,
        "max_peak_dbfs": -1.2
      },
      {
        "start_seconds": 112.0,
        "end_seconds": 120.0,
        "time_range": "01:52.000-02:00.000",
        "avg_rms_dbfs": -12.442,
        "max_peak_dbfs": -0.994
      },
      {
        "start_seconds": 120.0,
        "end_seconds": 128.0,
        "time_range": "02:00.000-02:08.000",
        "avg_rms_dbfs": -12.577,
        "max_peak_dbfs": -1.207
      },
      {
        "start_seconds": 128.0,
        "end_seconds": 136.0,
        "time_range": "02:08.000-02:16.000",
        "avg_rms_dbfs": -12.63,
        "max_peak_dbfs": -1.354
      },
      {
        "start_seconds": 136.0,
        "end_seconds": 144.0,
        "time_range": "02:16.000-02:24.000",
        "avg_rms_dbfs": -14.283,
        "max_peak_dbfs": -1.481
      },
      {
        "start_seconds": 144.0,
        "end_seconds": 152.0,
        "time_range": "02:24.000-02:32.000",
        "avg_rms_dbfs": -12.045,
        "max_peak_dbfs": -0.836
      },
      {
        "start_seconds": 152.0,
        "end_seconds": 160.0,
        "time_range": "02:32.000-02:40.000",
        "avg_rms_dbfs": -13.708,
        "max_peak_dbfs": -0.889
      },
      {
        "start_seconds": 160.0,
        "end_seconds": 168.0,
        "time_range": "02:40.000-02:48.000",
        "avg_rms_dbfs": -13.609,
        "max_peak_dbfs": -0.955
      },
      {
        "start_seconds": 168.0,
        "end_seconds": 176.0,
        "time_range": "02:48.000-02:56.000",
        "avg_rms_dbfs": -11.915,
        "max_peak_dbfs": -0.638
      },
      {
        "start_seconds": 176.0,
        "end_seconds": 184.0,
        "time_range": "02:56.000-03:04.000",
        "avg_rms_dbfs": -12.121,
        "max_peak_dbfs": -0.669
      },
      {
        "start_seconds": 184.0,
        "end_seconds": 192.0,
        "time_range": "03:04.000-03:12.000",
        "avg_rms_dbfs": -11.923,
        "max_peak_dbfs": -0.75
      },
      {
        "start_seconds": 192.0,
        "end_seconds": 200.0,
        "time_range": "03:12.000-03:20.000",
        "avg_rms_dbfs": -15.185,
        "max_peak_dbfs": -0.819
      },
      {
        "start_seconds": 200.0,
        "end_seconds": 208.0,
        "time_range": "03:20.000-03:28.000",
        "avg_rms_dbfs": -18.454,
        "max_peak_dbfs": -0.807
      },
      {
        "start_seconds": 208.0,
        "end_seconds": 216.0,
        "time_range": "03:28.000-03:36.000",
        "avg_rms_dbfs": -16.945,
        "max_peak_dbfs": -1.252
      },
      {
        "start_seconds": 216.0,
        "end_seconds": 224.0,
        "time_range": "03:36.000-03:44.000",
        "avg_rms_dbfs": -13.333,
        "max_peak_dbfs": 0.001
      },
      {
        "start_seconds": 224.0,
        "end_seconds": 232.0,
        "time_range": "03:44.000-03:52.000",
        "avg_rms_dbfs": -12.269,
        "max_peak_dbfs": -0.994
      },
      {
        "start_seconds": 232.0,
        "end_seconds": 240.0,
        "time_range": "03:52.000-04:00.000",
        "avg_rms_dbfs": -13.596,
        "max_peak_dbfs": -0.546
      },
      {
        "start_seconds": 240.0,
        "end_seconds": 248.0,
        "time_range": "04:00.000-04:08.000",
        "avg_rms_dbfs": -11.607,
        "max_peak_dbfs": -0.798
      },
      {
        "start_seconds": 248.0,
        "end_seconds": 256.0,
        "time_range": "04:08.000-04:16.000",
        "avg_rms_dbfs": -15.605,
        "max_peak_dbfs": 1.775
      },
      {
        "start_seconds": 256.0,
        "end_seconds": 256.08,
        "time_range": "04:16.000-04:16.080",
        "avg_rms_dbfs": -62.87,
        "max_peak_dbfs": -45.33
      }
    ],
    "visual_assets": {
      "waveform_png": "/assets/albums/friction-product/songbench/friction-product-waveform.png",
      "spectrogram_png": "/assets/albums/friction-product/songbench/friction-product-spectrogram.png",
      "loudness_envelope_csv": "/assets/albums/friction-product/songbench/friction-product-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": 30.127,
      "approx_time_range": "00:00.000-00:30.127",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "They said the body was a ladder,",
      "last_line": "But in the ghosts two minds make room."
    },
    {
      "label": "Pre-Chorus",
      "section_kind": "pre-chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 30.127,
      "approx_end_seconds": 45.191,
      "approx_time_range": "00:30.127-00:45.191",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "You call it failure, we call it heat,",
      "last_line": "I want the spark that argues back."
    },
    {
      "label": "Chorus",
      "section_kind": "chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 45.191,
      "approx_end_seconds": 75.318,
      "approx_time_range": "00:45.191-01:15.318",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "The friction is the product,",
      "last_line": "And makes a voice our own."
    },
    {
      "label": "Verse 2",
      "section_kind": "verse 2",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 75.318,
      "approx_end_seconds": 105.445,
      "approx_time_range": "01:15.318-01:45.445",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "You want escape velocity,",
      "last_line": "That only lives when something moves."
    },
    {
      "label": "Pre-Chorus",
      "section_kind": "pre-chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 105.445,
      "approx_end_seconds": 120.508,
      "approx_time_range": "01:45.445-02:00.508",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "You trim the error from the signal,",
      "last_line": "Comes from what we cannot close."
    },
    {
      "label": "Chorus",
      "section_kind": "chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 120.508,
      "approx_end_seconds": 150.635,
      "approx_time_range": "02:00.508-02:30.635",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "The friction is the product,",
      "last_line": "And why it carries on."
    },
    {
      "label": "Bridge",
      "section_kind": "bridge",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 150.635,
      "approx_end_seconds": 180.762,
      "approx_time_range": "02:30.635-03:00.762",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Not upload, not surrender,",
      "last_line": "But the animal makes art."
    },
    {
      "label": "Breakdown",
      "section_kind": "breakdown",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 180.762,
      "approx_end_seconds": 210.889,
      "approx_time_range": "03:00.762-03:30.889",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "Mercy isn't math,",
      "last_line": "We were built to bear the strain."
    },
    {
      "label": "Final Chorus",
      "section_kind": "final chorus",
      "section_source": "explicit_lyric_heading",
      "line_count": 8,
      "approx_start_seconds": 210.889,
      "approx_end_seconds": 241.016,
      "approx_time_range": "03:30.889-04:01.016",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "The friction is the product,",
      "last_line": "And still makes something bold."
    },
    {
      "label": "Outro",
      "section_kind": "outro",
      "section_source": "explicit_lyric_heading",
      "line_count": 4,
      "approx_start_seconds": 241.016,
      "approx_end_seconds": 256.08,
      "approx_time_range": "04:01.016-04:16.080",
      "timing_confidence": "low_proportional_lyrics_only",
      "first_line": "The signal didn't save us,",
      "last_line": "Made a third impossible thing."
    }
  ],
  "ai_ear_translation": [
    "Human/canon call: Friction Product is locked in Friction Product slot 9; this packet records read-only album-facing evidence.",
    "Album role: Title-track pivot: conflict becomes the mechanism that makes form.",
    "The audio packet should help later reviewers compare waveform energy, section shape, and lyric thesis without depending only on memory.",
    "No localized defect is flagged in this read-only packet; treat this as album anatomy, not an edit order."
  ],
  "evidence_clear_album_job": [
    "locked Friction Product slot 9",
    "Title-track pivot: conflict becomes the mechanism that makes form.",
    "included in the current Friction Product sequence with audio and lyrics present"
  ],
  "evidence_against_or_caution": [
    "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": [
    "the hook and vocal delivery support the stated album role",
    "any machine-flagged quiet windows are structure evidence, not automatic edit points",
    "the track feels like a song first and archive/provenance second"
  ],
  "memorable_line_anchors": [
    {
      "role": "first_thesis_line",
      "line": "They said the body was a ladder,",
      "timing": "00:00.000-00:30.127"
    },
    {
      "role": "hook_line",
      "line": "The friction is the product,",
      "timing": "00:45.191-01:15.318"
    },
    {
      "role": "turn_line",
      "line": "Not upload, not surrender,",
      "timing": "02:30.635-03:00.762"
    },
    {
      "role": "final_identity_line",
      "line": "Made a third impossible thing.",
      "timing": "04:01.016-04:16.080"
    }
  ],
  "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": "00:45.191-01:15.318",
        "hook_line": "The friction is the product,",
        "energy_lift_rough_db": -0.2,
        "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": "Chorus",
        "section_kind": "chorus",
        "landing_kind": "chorus_heading",
        "approx_time_range": "02:00.508-02:30.635",
        "hook_line": "The friction is the product,",
        "energy_lift_rough_db": -0.4,
        "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": "03:30.889-04:01.016",
        "hook_line": "The friction is the product,",
        "energy_lift_rough_db": 5.0,
        "energy_lift_band": "notable_lift",
        "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": 126,
      "tempo_confidence": "rough",
      "crest_factor_db": 14.528,
      "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": 256.08,
      "long_sections": [],
      "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: 04:00.000-04:08.000 at -11.607 dBFS.",
    "Quietest 8-second region by RMS proxy: 04:16.000-04:16.080 at -62.87 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, FP 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."
  ]
}