# GM SongBench: Captain White at the End of Time

Generated: 2026-10-06T19:57:22Z
Schema: `gm-songbench/v0.4`
SongBench status: `album_wide_v0.4_read_only_packet`
Freshness version: `songbench-v0-4-glitchmob-time-full-coverage-2026-10-06-v1`

> 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.

GM SongBench turns audio into structured musical evidence. It does not replace taste; it records evidence around taste so later AI readers can reason about what the ear heard.

## Self Verification

- Expected schema: `gm-songbench/v0.4`
- Generated at UTC: `2026-10-06T19:57:22Z`
- Album run id: `2026-10-06T19:57:04Z`
- JSON source of truth: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.v0.4.json`
- Stable JSON alias: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.json`
- Markdown mirror: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.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 diagnostics: 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.
- Original v0.4 pilot track: Zuman
- Current track is original pilot: false

## Content Hashes

- audio_m4a: `3b3994936c9bf4a0bdd6499953ba4bc1d79819e736e4c405d278572285196485` (/assets/albums/glitchmob-time/audio/captain-white-at-the-end-of-time.m4a)
- waveform_png: `f5379fa144f86aa1d4bb0eaa913bf6843e08441f8136087381fc1464e75bc652` (/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-waveform.png)
- spectrogram_png: `09fa6abb0afbb4cefd571baf94a766219dc0f789632c16b72d05bfcc49536c64` (/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-spectrogram.png)
- loudness_envelope_csv: `2f0cd7a2303057f6524e0de8032a5c54773d32ba49f2f6bc14f6669aa8d5447d` (/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-loudness-envelope.csv)
- lyrics_txt: `1df73d3d5444eea367e2828a37c5c7f03eac38e56e02ea0d3c169408fa5d1f46` (/assets/albums/glitchmob-time/lyrics/captain-white-at-the-end-of-time.txt)

## Canonical Placement

- Album: GlitchMob Time (`glitchmob-time`)
- Track number: 7
- Status: source-verified
- Audio: `/assets/albums/glitchmob-time/audio/captain-white-at-the-end-of-time.m4a`
- Lyrics: `/assets/albums/glitchmob-time/lyrics/captain-white-at-the-end-of-time.txt`
- Packet type: `anatomy_provenance_packet`
- Canon status: `source-verified`
- Edit authority: SongBench is not an edit order. It can advise; Kerry's explicit canon instruction controls.

## Human Ear Seed

- Kerry 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 Captain White at the End of Time in GlitchMob Time slot 7.

No subjective listening evaluation is included in this packet.


## Audio Facts

- Duration: 06:14.800 (374.8 seconds)
- Codec: opus
- Sample rate: 48000 Hz
- Channels: 2
- Bit rate: 131283 bps
- SHA256: `3b3994936c9bf4a0bdd6499953ba4bc1d79819e736e4c405d278572285196485`

## Measured Dynamics

- peak_dbfs: -1.182
- rms_dbfs: -14.063
- crest_factor_db: 12.881

## Tempo Estimate

- BPM: 88
- Method: rough RMS-onset autocorrelation over mono downmix
- Confidence: rough

## AI Ear Translation

- Source-ledger context: The source ledger lists Captain White at the End of Time in GlitchMob Time slot 7.
- 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 Balance

### Evidence the song has a clear album job

- The source ledger lists Captain White at the End of Time in GlitchMob Time slot 7.
- source status: source-verified
- source audio and lyric files are present and hashed

### Evidence suggesting 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 listening 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

## Field Source Classification

- `audio, analysis.dynamics, analysis.tempo_estimate, analysis.energy_regions_8s, analysis.quiet_windows, visual_summary_words`: audio_measured (derived_rough) - Extends AI hearing with measured audio proxies.
- `diagnostics.chorus_landing`: audio_measured_plus_section_scaffolding (rough_rms_proxy) - Uses approximate lyric sections plus RMS envelope; useful for questions, not verdicts.
- `lyric_section_map, memorable_line_anchors`: lyric_structural_scaffolding (proportional_estimate) - Helps navigation but is not verified audio alignment.
- `canon_control, human_ear_seed, evidence_clear_album_job, ai_ear_translation`: source_ledger_scaffolding (curation_context) - Records source-ledger placement without a human listening judgment.

## Memorable Line Anchors

- first_thesis_line: Captain White finds a fault in the coffee machine (00:00.000-00:29.396)
- hook_line: Captain White at the end of time (01:13.490-01:42.886)
- turn_line: If he is a man, no record remains (03:25.773-03:55.169)
- final_identity_line: If anyone remains, the watch is complete (05:23.357-06:14.800)

## Lyric Section Map

Timing confidence: `proportional_estimate`. These ranges are rough proportional anchors until hand-aligned timestamps exist.

Confidence ladder: proportional_estimate -> section_level_hand_alignment -> line_level_hand_alignment -> verified_lyric_audio_sync

### Verse 1

- Approx range: 00:00.000-00:29.396
- First line: Captain White finds a fault in the coffee machine
- Last line: He signs for the rations, then checks all four doors
- Timing confidence: low_proportional_lyrics_only

### Verse 2

- Approx range: 00:29.396-00:58.792
- First line: At 06:10 he reads the weather report
- Last line: He taps it twice, and it starts if it can
- Timing confidence: low_proportional_lyrics_only

### Pre-Chorus

- Approx range: 00:58.792-01:13.490
- First line: The logbook is heavy with years of the same
- Last line: A coordinate, a pressure, a date, and his name
- Timing confidence: low_proportional_lyrics_only

### Chorus

- Approx range: 01:13.490-01:42.886
- First line: Captain White at the end of time
- Last line: He keeps his voice steady so no one hears
- Timing confidence: low_proportional_lyrics_only

### Verse 3

- Approx range: 01:42.886-02:12.282
- First line: The stars have gone out one department at a time
- Last line: And files a report marked “nothing to see”
- Timing confidence: low_proportional_lyrics_only

### Verse 4

- Approx range: 02:12.282-02:41.678
- First line: There’s a chair by the viewport reserved for the crew
- Last line: He answers, “I’m here,” though he doesn’t know why
- Timing confidence: low_proportional_lyrics_only

### Pre-Chorus

- Approx range: 02:41.678-02:56.376
- First line: No bell in the corridor, no footsteps above
- Last line: Just the measured machinery doing its job
- Timing confidence: low_proportional_lyrics_only

### Chorus

- Approx range: 02:56.376-03:25.773
- First line: Captain White at the end of time
- Last line: He keeps his voice steady so no one hears
- Timing confidence: low_proportional_lyrics_only

### Bridge

- Approx range: 03:25.773-03:55.169
- First line: If he is a man, no record remains
- Last line: The message keeps waiting, the channel stays warm
- Timing confidence: low_proportional_lyrics_only

### Verse 5

- Approx range: 03:55.169-04:24.565
- First line: He reads out the coordinates into the black
- Last line: But he marks every minute because someone will
- Timing confidence: low_proportional_lyrics_only

### Build

- Approx range: 04:24.565-04:53.961
- First line: Beyond the hull, the last horizon thins
- Last line: A breath becomes a question balanced over death
- Timing confidence: low_proportional_lyrics_only

### Final Chorus

- Approx range: 04:53.961-05:23.357
- First line: Captain White at the end of time
- Last line: With both hands open, without fear
- Timing confidence: low_proportional_lyrics_only

### Outro

- Approx range: 05:23.357-06:14.800
- First line: He lifts the transmitter, though the panel is dim
- Last line: If anyone remains, the watch is complete
- Timing confidence: low_proportional_lyrics_only

## Quiet / Edit Boundary Candidates

These are machine-detected quiet windows only. Confirm by ear before any edit.

- 00:06.250 (6.25s), RMS -25.572 dBFS, category `intro_silence`, edit_candidate=false: intro or setup silence
- 00:20.750 (20.75s), RMS -24.893 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 00:27.750 (27.75s), RMS -23.81 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 00:35.750 (35.75s), RMS -24.48 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 01:48.750 (108.75s), RMS -23.508 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 03:21.750 (201.75s), RMS -25.94 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 03:25.250 (205.25s), RMS -29.18 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 03:48.250 (228.25s), RMS -31.869 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 05:22.250 (322.25s), RMS -27.805 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 05:24.250 (324.25s), RMS -28.763 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 05:25.250 (325.25s), RMS -28.811 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 06:14.250 (374.25s), RMS -87.505 dBFS, category `ending_fade_or_silence`, edit_candidate=false: ending fade/silence region

## Diagnostics

### Chorus Landing

Band legend:

- within_noise: abs(delta) < 0.75 - RMS difference is too small to treat as a meaningful lift/drop proxy.
- modest_lift: 0.75 <= delta < 2.0 - RMS proxy suggests a small lift into the chorus.
- notable_lift: delta >= 2.0 - RMS proxy suggests a clear energy lift into the chorus.
- modest_drop: -2.0 < delta <= -0.75 - RMS proxy suggests a small drop entering the section.
- notable_drop_or_fade: delta <= -2.0 - RMS proxy suggests a clear drop, often requiring fade/context caveats.

- Chorus (01:13.490-01:42.886): hook `Captain White at the end of time`, energy_lift_band=modest_lift, rough_db=1.5, confidence=rough_rms_proxy; Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.
- Chorus (02:56.376-03:25.773): hook `Captain White at the end of time`, energy_lift_band=modest_drop, rough_db=-1.4, confidence=rough_rms_proxy; Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.
- Final Chorus (04:53.961-05:23.357): hook `Captain White at the end of time`, energy_lift_band=modest_drop, rough_db=-1.4, confidence=rough_rms_proxy; Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel. Caveat: This window overlaps the ending fade; do not read a negative band as a weak-chorus verdict.

### Groove / Pocket

- Rough tempo and dynamics only; pocket is a human-ear judgment until beat-grid analysis exists.
- Tempo proxy BPM: 88

### Section Drag

- Flags long proportional sections only; it cannot decide whether a bridge or outro has earned its length.

### Label Infection Scan

- Status: no_obvious_label_infection_detected
- Known artifact class: sung stage direction / speaker label / call-response label infection

## Visual Summary In Words

- Loudest 8-second region by RMS proxy: 05:36.000-05:44.000 at -10.713 dBFS.
- Quietest 8-second region by RMS proxy: 06:08.000-06:14.800 at -30.097 dBFS.
- Waveform and spectrogram images should be read as supporting evidence for section density, energy ramps, and unusual transients, not as final taste judgments.

## Current 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 07, audio file, and lyric file unless Kerry explicitly reopens the track.

## Public Assets

- JSON: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.json`
- Versioned JSON: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.v0.4.json`
- Markdown: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.md`
- Versioned Markdown: `/glitchmob-time/songbench/captain-white-at-the-end-of-time.v0.4.md`
- Waveform: `/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-waveform.png`
- Spectrogram: `/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-spectrogram.png`
- Loudness CSV: `/assets/albums/glitchmob-time/songbench/captain-white-at-the-end-of-time-loudness-envelope.csv`