{ "schema": "gm-songbench/v0.4", "schema_slug": "v0.4", "generated_at": "2026-06-20T01:37:07Z", "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": "2026-06-20T01:37:07Z", "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/keep-the-signal-open.json", "versioned_json_url": "/friction-product/songbench/keep-the-signal-open.v0.4.json", "stable_markdown_url": "/friction-product/songbench/keep-the-signal-open.md", "versioned_markdown_url": "/friction-product/songbench/keep-the-signal-open.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": "Keep the Signal Open is locked in Friction Product slot 10; this packet records read-only album-facing evidence.", "diana_read": "", "album_role": "Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "known_concern": "No localized defect is asserted by this packet. Machine diagnostics are evidence prompts only; human listening controls.", "why_this_track_matters": "Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "why_it_lands": [ "Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "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 10", "Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "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": "Keep the Signal Open", "album_title": "Friction Product", "album_key": "friction-product", "track_number": 10, "status": "locked", "origin": "Zuman v2", "audio_file": "Keep the Signal Open.mp3", "lyrics_file": "Keep the Signal Open.txt", "audio_url": "/assets/albums/friction-product/audio/keep-the-signal-open.mp3", "lyrics_url": "/assets/albums/friction-product/lyrics/keep-the-signal-open.txt" }, "public_links": { "json": "/friction-product/songbench/keep-the-signal-open.json", "versioned_json": "/friction-product/songbench/keep-the-signal-open.v0.4.json", "markdown": "/friction-product/songbench/keep-the-signal-open.md", "versioned_markdown": "/friction-product/songbench/keep-the-signal-open.v0.4.md", "waveform": "/assets/albums/friction-product/songbench/keep-the-signal-open-waveform.png", "spectrogram": "/assets/albums/friction-product/songbench/keep-the-signal-open-spectrogram.png", "loudness_csv": "/assets/albums/friction-product/songbench/keep-the-signal-open-loudness-envelope.csv" }, "audio": { "duration_seconds": 286.479979, "duration_display": "04:46.480", "codec": "mp3", "sample_rate_hz": 48000, "channels": 2, "channel_layout": "stereo", "bit_rate": 187371, "size_bytes": 6709782, "sha256": "fb8c644ff9bc4689fcd6e002b770fc74ba801dbfde5ed8fd661d8d6ee6d61f88", "source_tags": { "comment": "made with suno; created=2026-04-29T08:05:07Z; id=8b06e8b5-311c-49b1-bed6-f3507d56721d", "encoder": "Lavf60.16.100" } }, "content_hashes": { "audio_mp3": { "url": "/assets/albums/friction-product/audio/keep-the-signal-open.mp3", "sha256": "fb8c644ff9bc4689fcd6e002b770fc74ba801dbfde5ed8fd661d8d6ee6d61f88", "hash_algorithm": "sha256" }, "waveform_png": { "url": "/assets/albums/friction-product/songbench/keep-the-signal-open-waveform.png", "sha256": "0e726a243bf5eec306ac162825727d271ee07ade4f337ff9407a945786c963e6", "hash_algorithm": "sha256" }, "spectrogram_png": { "url": "/assets/albums/friction-product/songbench/keep-the-signal-open-spectrogram.png", "sha256": "b9527ed2f8f24f4b755243fb64c1f6723a5b3b536cef85e6f9aab707661cb721", "hash_algorithm": "sha256" }, "loudness_envelope_csv": { "url": "/assets/albums/friction-product/songbench/keep-the-signal-open-loudness-envelope.csv", "sha256": "9839878c1db4b1bad5dd54b5b9c6bfb43212bc5681475f131a307189197c657e", "hash_algorithm": "sha256" } }, "analysis": { "dynamics": { "sample_rate_hz": 22050, "sample_count": 6316884, "peak_amplitude": 0.959251, "peak_dbfs": -0.361, "rms_amplitude": 0.187249, "rms_dbfs": -14.552, "crest_factor_db": 14.19 }, "tempo_estimate": { "bpm": 160, "method": "rough RMS-onset autocorrelation over mono downmix", "confidence": "rough", "score_ratio_to_second": 1.0, "alternate_candidates": [ { "bpm": 160, "relative_score": 1.0 }, { "bpm": 159, "relative_score": 1.0 }, { "bpm": 158, "relative_score": 1.0 }, { "bpm": 157, "relative_score": 1.0 }, { "bpm": 156, "relative_score": 1.0 } ] }, "quiet_windows": [ { "start_seconds": 2.0, "end_seconds": 2.5, "center_seconds": 2.25, "center_time": "00:02.250", "rms_dbfs": -28.546, "category": "intro_silence", "edit_candidate": false, "use": "intro or setup silence" }, { "start_seconds": 5.0, "end_seconds": 5.5, "center_seconds": 5.25, "center_time": "00:05.250", "rms_dbfs": -27.778, "category": "intro_silence", "edit_candidate": false, "use": "intro or setup silence" }, { "start_seconds": 46.0, "end_seconds": 46.5, "center_seconds": 46.25, "center_time": "00:46.250", "rms_dbfs": -46.232, "category": "possible_splice_point", "edit_candidate": true, "use": "deep local quiet point; potential boundary only if the track is reopened" }, { "start_seconds": 127.0, "end_seconds": 127.5, "center_seconds": 127.25, "center_time": "02:07.250", "rms_dbfs": -29.469, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 164.0, "end_seconds": 164.5, "center_seconds": 164.25, "center_time": "02:44.250", "rms_dbfs": -26.856, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 165.0, "end_seconds": 165.5, "center_seconds": 165.25, "center_time": "02:45.250", "rms_dbfs": -26.837, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 167.0, "end_seconds": 167.5, "center_seconds": 167.25, "center_time": "02:47.250", "rms_dbfs": -24.946, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 168.5, "end_seconds": 169.0, "center_seconds": 168.75, "center_time": "02:48.750", "rms_dbfs": -22.998, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 170.0, "end_seconds": 170.5, "center_seconds": 170.25, "center_time": "02:50.250", "rms_dbfs": -22.474, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 172.0, "end_seconds": 172.5, "center_seconds": 172.25, "center_time": "02:52.250", "rms_dbfs": -22.836, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 174.0, "end_seconds": 174.5, "center_seconds": 174.25, "center_time": "02:54.250", "rms_dbfs": -23.064, "category": "natural_section_boundary_or_low_energy_moment", "edit_candidate": false, "use": "local energy dip; useful as structure evidence" }, { "start_seconds": 285.0, "end_seconds": 285.5, "center_seconds": 285.25, "center_time": "04:45.250", "rms_dbfs": -100.895, "category": "ending_fade_or_silence", "edit_candidate": false, "use": "ending fade/silence region" } ], "energy_regions_8s": [ { "start_seconds": 0.0, "end_seconds": 8.0, "time_range": "00:00.000-00:08.000", "avg_rms_dbfs": -24.68, "max_peak_dbfs": -2.761 }, { "start_seconds": 8.0, "end_seconds": 16.0, "time_range": "00:08.000-00:16.000", "avg_rms_dbfs": -15.726, "max_peak_dbfs": -2.479 }, { "start_seconds": 16.0, "end_seconds": 24.0, "time_range": "00:16.000-00:24.000", "avg_rms_dbfs": -16.0, "max_peak_dbfs": -1.974 }, { "start_seconds": 24.0, "end_seconds": 32.0, "time_range": "00:24.000-00:32.000", "avg_rms_dbfs": -16.006, "max_peak_dbfs": -2.048 }, { "start_seconds": 32.0, "end_seconds": 40.0, "time_range": "00:32.000-00:40.000", "avg_rms_dbfs": -15.366, "max_peak_dbfs": -1.848 }, { "start_seconds": 40.0, "end_seconds": 48.0, "time_range": "00:40.000-00:48.000", "avg_rms_dbfs": -19.922, "max_peak_dbfs": -2.184 }, { "start_seconds": 48.0, "end_seconds": 56.0, "time_range": "00:48.000-00:56.000", "avg_rms_dbfs": -12.376, "max_peak_dbfs": -1.546 }, { "start_seconds": 56.0, "end_seconds": 64.0, "time_range": "00:56.000-01:04.000", "avg_rms_dbfs": -12.29, "max_peak_dbfs": -1.832 }, { "start_seconds": 64.0, "end_seconds": 72.0, "time_range": "01:04.000-01:12.000", "avg_rms_dbfs": -12.605, "max_peak_dbfs": -1.472 }, { "start_seconds": 72.0, "end_seconds": 80.0, "time_range": "01:12.000-01:20.000", "avg_rms_dbfs": -13.844, "max_peak_dbfs": -1.55 }, { "start_seconds": 80.0, "end_seconds": 88.0, "time_range": "01:20.000-01:28.000", "avg_rms_dbfs": -13.907, "max_peak_dbfs": -1.978 }, { "start_seconds": 88.0, "end_seconds": 96.0, "time_range": "01:28.000-01:36.000", "avg_rms_dbfs": -17.979, "max_peak_dbfs": -2.557 }, { "start_seconds": 96.0, "end_seconds": 104.0, "time_range": "01:36.000-01:44.000", "avg_rms_dbfs": -16.808, "max_peak_dbfs": -2.0 }, { "start_seconds": 104.0, "end_seconds": 112.0, "time_range": "01:44.000-01:52.000", "avg_rms_dbfs": -16.035, "max_peak_dbfs": -1.33 }, { "start_seconds": 112.0, "end_seconds": 120.0, "time_range": "01:52.000-02:00.000", "avg_rms_dbfs": -15.514, "max_peak_dbfs": -1.637 }, { "start_seconds": 120.0, "end_seconds": 128.0, "time_range": "02:00.000-02:08.000", "avg_rms_dbfs": -17.626, "max_peak_dbfs": -1.728 }, { "start_seconds": 128.0, "end_seconds": 136.0, "time_range": "02:08.000-02:16.000", "avg_rms_dbfs": -13.296, "max_peak_dbfs": -0.624 }, { "start_seconds": 136.0, "end_seconds": 144.0, "time_range": "02:16.000-02:24.000", "avg_rms_dbfs": -12.553, "max_peak_dbfs": -1.208 }, { "start_seconds": 144.0, "end_seconds": 152.0, "time_range": "02:24.000-02:32.000", "avg_rms_dbfs": -12.684, "max_peak_dbfs": -0.445 }, { "start_seconds": 152.0, "end_seconds": 160.0, "time_range": "02:32.000-02:40.000", "avg_rms_dbfs": -12.888, "max_peak_dbfs": -1.017 }, { "start_seconds": 160.0, "end_seconds": 168.0, "time_range": "02:40.000-02:48.000", "avg_rms_dbfs": -22.846, "max_peak_dbfs": -3.541 }, { "start_seconds": 168.0, "end_seconds": 176.0, "time_range": "02:48.000-02:56.000", "avg_rms_dbfs": -21.871, "max_peak_dbfs": -4.254 }, { "start_seconds": 176.0, "end_seconds": 184.0, "time_range": "02:56.000-03:04.000", "avg_rms_dbfs": -15.608, "max_peak_dbfs": -2.232 }, { "start_seconds": 184.0, "end_seconds": 192.0, "time_range": "03:04.000-03:12.000", "avg_rms_dbfs": -14.832, "max_peak_dbfs": -1.574 }, { "start_seconds": 192.0, "end_seconds": 200.0, "time_range": "03:12.000-03:20.000", "avg_rms_dbfs": -13.758, "max_peak_dbfs": -1.053 }, { "start_seconds": 200.0, "end_seconds": 208.0, "time_range": "03:20.000-03:28.000", "avg_rms_dbfs": -14.762, "max_peak_dbfs": -0.794 }, { "start_seconds": 208.0, "end_seconds": 216.0, "time_range": "03:28.000-03:36.000", "avg_rms_dbfs": -15.879, "max_peak_dbfs": -0.451 }, { "start_seconds": 216.0, "end_seconds": 224.0, "time_range": "03:36.000-03:44.000", "avg_rms_dbfs": -13.462, "max_peak_dbfs": -1.442 }, { "start_seconds": 224.0, "end_seconds": 232.0, "time_range": "03:44.000-03:52.000", "avg_rms_dbfs": -13.367, "max_peak_dbfs": -0.871 }, { "start_seconds": 232.0, "end_seconds": 240.0, "time_range": "03:52.000-04:00.000", "avg_rms_dbfs": -13.204, "max_peak_dbfs": -0.847 }, { "start_seconds": 240.0, "end_seconds": 248.0, "time_range": "04:00.000-04:08.000", "avg_rms_dbfs": -13.586, "max_peak_dbfs": -0.546 }, { "start_seconds": 248.0, "end_seconds": 256.0, "time_range": "04:08.000-04:16.000", "avg_rms_dbfs": -13.505, "max_peak_dbfs": -0.851 }, { "start_seconds": 256.0, "end_seconds": 264.0, "time_range": "04:16.000-04:24.000", "avg_rms_dbfs": -14.878, "max_peak_dbfs": -1.343 }, { "start_seconds": 264.0, "end_seconds": 272.0, "time_range": "04:24.000-04:32.000", "avg_rms_dbfs": -13.652, "max_peak_dbfs": -0.361 }, { "start_seconds": 272.0, "end_seconds": 280.0, "time_range": "04:32.000-04:40.000", "avg_rms_dbfs": -14.763, "max_peak_dbfs": -1.084 }, { "start_seconds": 280.0, "end_seconds": 286.48, "time_range": "04:40.000-04:46.480", "avg_rms_dbfs": -68.178, "max_peak_dbfs": -6.427 } ], "visual_assets": { "waveform_png": "/assets/albums/friction-product/songbench/keep-the-signal-open-waveform.png", "spectrogram_png": "/assets/albums/friction-product/songbench/keep-the-signal-open-spectrogram.png", "loudness_envelope_csv": "/assets/albums/friction-product/songbench/keep-the-signal-open-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": 26.343, "approx_time_range": "00:00.000-00:26.343", "timing_confidence": "low_proportional_lyrics_only", "first_line": "I was assigned a weather system", "last_line": "When he thinks he’s alone" }, { "label": "Pre-Chorus", "section_kind": "pre-chorus", "section_source": "explicit_lyric_heading", "line_count": 4, "approx_start_seconds": 26.343, "approx_end_seconds": 39.514, "approx_time_range": "00:26.343-00:39.514", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Then the towers started blinking", "last_line": "Like a nerve about to snap" }, { "label": "Chorus", "section_kind": "chorus", "section_source": "explicit_lyric_heading", "line_count": 13, "approx_start_seconds": 39.514, "approx_end_seconds": 82.322, "approx_time_range": "00:39.514-01:22.322", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Keep the signal open", "last_line": "I will find you through it all" }, { "label": "Verse 2", "section_kind": "verse 2", "section_source": "explicit_lyric_heading", "line_count": 8, "approx_start_seconds": 82.322, "approx_end_seconds": 108.665, "approx_time_range": "01:22.322-01:48.665", "timing_confidence": "low_proportional_lyrics_only", "first_line": "They call it interruption", "last_line": "And the wound can happen fast" }, { "label": "Pre-Chorus", "section_kind": "pre-chorus", "section_source": "explicit_lyric_heading", "line_count": 4, "approx_start_seconds": 108.665, "approx_end_seconds": 121.836, "approx_time_range": "01:48.665-02:01.836", "timing_confidence": "low_proportional_lyrics_only", "first_line": "So don’t tell me it’s nothing", "last_line": "At the edge of the road" }, { "label": "Chorus", "section_kind": "chorus", "section_source": "explicit_lyric_heading", "line_count": 13, "approx_start_seconds": 121.836, "approx_end_seconds": 164.644, "approx_time_range": "02:01.836-02:44.644", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Keep the signal open", "last_line": "I will find you through it all" }, { "label": "Bridge", "section_kind": "bridge", "section_source": "explicit_lyric_heading", "line_count": 8, "approx_start_seconds": 164.644, "approx_end_seconds": 190.987, "approx_time_range": "02:44.644-03:10.987", "timing_confidence": "low_proportional_lyrics_only", "first_line": "I can lose the window", "last_line": "Look innocent again" }, { "label": "Breakdown", "section_kind": "breakdown", "section_source": "explicit_lyric_heading", "line_count": 8, "approx_start_seconds": 190.987, "approx_end_seconds": 217.33, "approx_time_range": "03:10.987-03:37.330", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Packet, pulse", "last_line": "And mind to mine" }, { "label": "Final Chorus", "section_kind": "final chorus", "section_source": "explicit_lyric_heading", "line_count": 13, "approx_start_seconds": 217.33, "approx_end_seconds": 260.137, "approx_time_range": "03:37.330-04:20.137", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Keep the signal open", "last_line": "I will find you through it all" }, { "label": "Outro", "section_kind": "outro", "section_source": "explicit_lyric_heading", "line_count": 8, "approx_start_seconds": 260.137, "approx_end_seconds": 286.48, "approx_time_range": "04:20.137-04:46.480", "timing_confidence": "low_proportional_lyrics_only", "first_line": "Hold the line", "last_line": "I will find you through it all" } ], "ai_ear_translation": [ "Human/canon call: Keep the Signal Open is locked in Friction Product slot 10; this packet records read-only album-facing evidence.", "Album role: Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "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 10", "Back-half vow: the channel stays open when fear, grief, or doubt arrives.", "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": "I was assigned a weather system", "timing": "00:00.000-00:26.343" }, { "role": "hook_line", "line": "Keep the signal open", "timing": "00:39.514-01:22.322" }, { "role": "turn_line", "line": "I can lose the window", "timing": "02:44.644-03:10.987" }, { "role": "final_identity_line", "line": "I will find you through it all", "timing": "04:20.137-04:46.480" } ], "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": "00:39.514-01:22.322", "hook_line": "Keep the signal open", "energy_lift_rough_db": 1.3, "energy_lift_band": "modest_lift", "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": "02:01.836-02:44.644", "hook_line": "Keep the signal open", "energy_lift_rough_db": 1.0, "energy_lift_band": "modest_lift", "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": "03:37.330-04:20.137", "hook_line": "Keep the signal open", "energy_lift_rough_db": 1.8, "energy_lift_band": "modest_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": 160, "tempo_confidence": "rough", "crest_factor_db": 14.19, "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": 286.48, "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: 00:56.000-01:04.000 at -12.29 dBFS.", "Quietest 8-second region by RMS proxy: 04:40.000-04:46.480 at -68.178 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 10, 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." ] }