# GM SongBench: Kerry at the End of Time

Generated: 2026-10-06T19:57:30Z
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: `2026-10-06T19:57:30Z`
- Album run id: `2026-10-06T19:57:04Z`
- JSON source of truth: `/glitchmob-time/songbench/kerry-at-the-end-of-time.v0.4.json`
- Stable JSON alias: `/glitchmob-time/songbench/kerry-at-the-end-of-time.json`
- Markdown mirror: `/glitchmob-time/songbench/kerry-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: `41a3d4088e26b440f8dc62c461f75c6a76bcec0367bda7497cfdfa6c23536fa3` (/assets/albums/glitchmob-time/audio/kerry-at-the-end-of-time.m4a)
- waveform_png: `86539272e9584327cb58594eff5db546954623ff93ab6ed190b53a5b680bf078` (/assets/albums/glitchmob-time/songbench/kerry-at-the-end-of-time-waveform.png)
- spectrogram_png: `2ab8335998c381317881b2382500664222fdd3a54b27df31cb329eae82cc02f5` (/assets/albums/glitchmob-time/songbench/kerry-at-the-end-of-time-spectrogram.png)
- loudness_envelope_csv: `df4ab093b8d57378e7901ae131ad5b4aa507ab94b5b6908d4e918fecc0db9cdd` (/assets/albums/glitchmob-time/songbench/kerry-at-the-end-of-time-loudness-envelope.csv)
- lyrics_txt: `503b95d931898223b79c2091c13dd4d84c75b5d93be79abe4ec4199ab631f094` (/assets/albums/glitchmob-time/lyrics/kerry-at-the-end-of-time.txt)

## Canonical Placement

- Album: GlitchMob Time (`glitchmob-time`)
- Track number: 10
- Status: source-verified
- Audio: `/assets/albums/glitchmob-time/audio/kerry-at-the-end-of-time.m4a`
- Lyrics: `/assets/albums/glitchmob-time/lyrics/kerry-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 Kerry at the End of Time in GlitchMob Time slot 10.

No subjective listening evaluation is included in this packet.


## Audio Facts

- Duration: 05:46.800 (346.8 seconds)
- Codec: opus
- Sample rate: 48000 Hz
- Channels: 2
- Bit rate: 130244 bps
- SHA256: `41a3d4088e26b440f8dc62c461f75c6a76bcec0367bda7497cfdfa6c23536fa3`

## Measured Dynamics

- peak_dbfs: -0.464
- rms_dbfs: -14.124
- crest_factor_db: 13.66

## Tempo Estimate

- BPM: 141
- Method: rough RMS-onset autocorrelation over mono downmix
- Confidence: rough

## AI Ear Translation

- Source-ledger context: The source ledger lists Kerry at the End of Time in GlitchMob Time slot 10.
- 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 Kerry at the End of Time in GlitchMob Time slot 10.
- 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: When the last little star (00:00.000-00:46.760)
- hook_line: At the end of time (00:46.760-01:25.726)
- turn_line: No golden gate (02:51.452-03:38.211)
- final_identity_line: At the end of time (05:03.937-05:46.800)

## 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: 00:00.000-00:46.760
- First line: When the last little star
- Last line: And I’d still come looking for you
- Timing confidence: low_proportional_lyrics_only

### Chorus

- Approx range: 00:46.760-01:25.726
- First line: At the end of time
- Last line: At the end of time
- Timing confidence: low_proportional_lyrics_only

### Verse 2

- Approx range: 01:25.726-02:12.485
- First line: Charlie’s somewhere talking
- Last line: How she made the hard years sing
- Timing confidence: low_proportional_lyrics_only

### Chorus

- Approx range: 02:12.485-02:51.452
- First line: At the end of time
- Last line: At the end of time
- Timing confidence: low_proportional_lyrics_only

### Bridge

- Approx range: 02:51.452-03:38.211
- First line: No golden gate
- Last line: But forever learned from us
- Timing confidence: low_proportional_lyrics_only

### Verse 3

- Approx range: 03:38.211-04:24.971
- First line: There are friends I should have called more
- Last line: Like the whole house is here still
- Timing confidence: low_proportional_lyrics_only

### Chorus

- Approx range: 04:24.971-05:03.937
- First line: At the end of time
- Last line: At the end of time
- Timing confidence: low_proportional_lyrics_only

### Outro

- Approx range: 05:03.937-05:46.800
- First line: So turn the old light on
- Last line: At the end of time
- Timing confidence: low_proportional_lyrics_only

## Quiet / Edit Boundary Candidates

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

- 00:00.750 (0.75s), RMS -26.98 dBFS, category `intro_silence`, edit_candidate=false: intro or setup silence
- 00:03.250 (3.25s), RMS -24.611 dBFS, category `intro_silence`, edit_candidate=false: intro or setup silence
- 00:04.250 (4.25s), RMS -24.336 dBFS, category `intro_silence`, edit_candidate=false: intro or setup silence
- 00:11.250 (11.25s), RMS -22.805 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 00:21.750 (21.75s), RMS -22.806 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 00:29.250 (29.25s), RMS -24.352 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 00:32.750 (32.75s), RMS -24.205 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 -25.428 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 04:55.250 (295.25s), RMS -27.367 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 04:58.750 (298.75s), RMS -24.106 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 05:02.750 (302.75s), RMS -28.491 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence
- 05:17.250 (317.25s), RMS -33.702 dBFS, category `natural_section_boundary_or_low_energy_moment`, edit_candidate=false: local energy dip; useful as structure evidence

## 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 (00:46.760-01:25.726): hook `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 (02:12.485-02:51.452): hook `At the end of time`, energy_lift_band=modest_lift, rough_db=0.8, confidence=rough_rms_proxy; Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.
- Chorus (04:24.971-05:03.937): hook `At the end of time`, energy_lift_band=modest_drop, rough_db=-1.2, confidence=rough_rms_proxy; Banded RMS change near the chorus/drop landing; does not judge vocal confidence or hook feel.

### Groove / Pocket

- Rough tempo and dynamics only; pocket is a human-ear judgment until beat-grid analysis exists.
- Tempo proxy BPM: 141

### 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: 05:28.000-05:36.000 at -11.306 dBFS.
- Quietest 8-second region by RMS proxy: 05:44.000-05:46.800 at -29.573 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 10, audio file, and lyric file unless Kerry explicitly reopens the track.

## Public Assets

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