# W37–38 author QA · Share One Rhythm

**30 September 2026 · authored and computer-checked pack, frozen for root review.** These are author desk/file checks, not independent educator approval, actual learner/family feedback, human listening, physical print/access trials or classroom pilot.

## Teaching and practical musical use

Ten Days 181–190 scripts each have runnable six-stage 3/4/5/7/4/2-minute sequences, total 25 minutes. Seven prepared making invitations, 30 same-goal participation routes, 20 worked life examples, 20 free optional home/school bridges, short child prompts and separate daily next steps are present. Children look/choose/make/rehearse/revise/optionally share an own tiny six-beat rhythm; invented picture/puppet/pretend musical-parcel use or music alone, title/purpose may be unstated. No object passing, required two-person performance, simultaneous work, fixed speed, voice/body action, fine-motor or independence target.

ALL holds one complete sound/wait rhythm. Every whole sound belongs to A OR B exactly once; whole waits belong to neither. Independent checks read actual worked beat numbers, exact union/empty intersection, individual/role counts and four complementary ownership transfers while whole rhythm stays fixed. This new interlocking event handover revisits turn-taking/timbre/texture beyond the prior staggered phrase copy, repeated backing or cue concert. Source roles/counts/coverage do not establish social fairness, maker agreement, audience interpretation or achieved effect.

Every ordinary lesson offers chosen actual quiet Music making after exact local familiar source/technique/space/volume/access/willingness review: one chosen part, one-source ALL rhythm or optional shared line. A alone then B alone with all waits, comfortable accessible cue, one short take/one optional further try. Actual one-source ALL does not prove two-source handover; adult realization adult performance; silent composition/directing not child performance. Actual child/adult maker/support/accessible scoped rhythm-entry/aural/source contrast/receiver/audience observations separate from score intent.

Two fresh public planning checks are held for Days 185/190 before practice/key/matched audio, separate private educator key. First contrasts equal individual and role counts with exact coverage versus duplicate/missing beat. Second repairs B only, keeping ALL/A/total/role counts fixed; independently enumerating all 64 binary B patterns gives one solution. Fresh prescribed whole rhythms absent from earlier scripted practice/materials/examples/audio; child open creation remains open. First response, self-revision/support/pass/unavailable access distinguished. Public teaching checks are non-secure, not formal certification or child-performance tests.

Supplied named Share One Rhythm is accurately an original SubjectNest computer-created teaching model/graphic score/mathematical sound at one pitch anchor, not a melodic tune or human performance. Source card/full documented author purpose supply actual contextual material. Intended educational purpose/proposed scene distinct from achieved effect. No named human composer/performer, community tradition/importance or actual show use invented. Actual source encounter/observed child response supports narrow partial FE01 author-model purpose only; wider people/community coverage requires varied appropriate actual works/context/authority.

## Current official sources and rights

Fresh direct official ACARA workbook GET HTTP 200, 2,049,917 bytes, SHA-256 db446882d2c00cf7c085a03e250e2442fda6c44011fc114680c46c1dc7a822c3, identical to pinned 29 September import. Exact Foundation Music codes/descriptions/rows 21218/21227/21237/21246 compared. Arts overview direct 200 plus fresh official indexed text reviewed for aural practices/context; copyright page direct 200, hash unchanged from earlier same-session terms review. Receipts distinguish methods, hash refresh and actual read scope; no full page archived.

QCAA Prep Music alignment direct GET 403, no PDF downloaded. Fresh official indexed text read for exact codes/descriptions/standard-aspect relationships/copyright. Music v9 page direct 403, official indexed resource list read; implementation memo direct 403. No current sector adoption date, official approval, whole-standard attainment or grade asserted; school/system confirms adopted version/timetable/judgement.

Original text/code/scores/geometry/named model/mathematical tones CC BY 4.0 with credit/source/licence/changes. ACARA/QCAA/font/third-party/First Nations knowledge retain their terms/authority. DejaVu/Bitstream notice bundled. No borrowed music/recording/image, child data or First Nations knowledge supplied. Later real-source/ICIP/cultural permission/withdrawal gate held; original licence grants no cultural/acoustic/classroom authority. No ACARA/cultural endorsement.

## Print, exact access and sound

Eight original A4 SVG/searchable-PDF pairs generated. SVG title/description, all shared beat numbers, actual ALL diamonds/A circles/B squares, every wait/undecided cell and every printed word independently checked and preserved in exact linear/raised/no-sound alternatives. Three complete six-position rows; no required physical touch/marking. PDFs one A4 page, searchable embedded DejaVu fonts; all extracted words inside a 20-point page margin. All eight rendered pages inspected as contact sheet; both fresh pages, maker aid and source card also inspected at full-page size. No clipping/overlap observed in reviewed final digital layout; not physical printer/tactile/low-vision/AAC-user trial.

Three candidate WAVs: independent score/onset/full event-end/silence checks verify mono signed 16-bit PCM, 22,050 Hz, 74,970 frames/3.4 seconds, 0.20-second events/0.012-second fades, exact one-owner four-event model/A-and-B two-event extracts, all six waits/tails/inter-event regions/head/end zero silence, fixed 330/660 Hz source signatures and absence of added 440 Hz. No speech/cues/metronome/human recording/overlap. Signed-PCM peak/RMS observed: whole 459/136.57; A part 459/106.71; B part 426/85.24. Digital measures not acoustic safety/comfortable volume/hearing or performance evidence.

**HUMAN LISTENING NOT DONE / DEVICE NOT APPROVED / LOCAL VOLUME NOT APPROVED.** All candidates remain held until human educator whole-file preview on intended device/local comfortable volume with exact access/stop/willingness review. Quiet live making separately needs exact source/technique/space/maker approval. Clearance not learner aural/rhythm-entry/maker/receiver/audience evidence. No automatic playback/loop.

## Reproduction, rejection and portable use

Deliberate generator independently run in a temporary copy recreates all 20 generated outputs byte for byte: 16 SVG/PDF files, exact alternatives and three WAVs. Read-only verifier reports 50 valid local links and 42 manifest SHA-256 file entries. Manifest refreshed deliberately after reviewed edits, then read-only checked against frozen bytes. Public Markdown checked for absence of private workstation paths. From pack folder: `python3 generate_assets.py --write`, `python3 verify_pack.py`, `python3 verify_negative_probes.py`; hash refresh only after review with `python3 verify_pack.py --write-manifest`.

Eight reproducible read-only negative probes mutate temporary copies only; normal source/teaching/print/audio groups pass first, each corruption then rejected:

| Changed evidence | Observed rejection |
|---|---|
| Actual B mark shifted one SVG coordinate | Actual independent score position differs |
| Worked B event duplicates A and misses whole event | Exact union/one-owner relation differs |
| Actual B WAV first event moved 0.70→0.80 seconds | Detected onset differs from independent expectation |
| Written model B onset changed 0.70→0.80 seconds | Per-part onset transcript differs |
| Whole-model silence endpoint changed 0.90→0.95 seconds | Full event-end/silence transcript differs |
| Receipt falsely names human composer/performer | Model attribution flag rejected |
| Held fresh whole rhythm inserted into practice | Fresh prescribed rhythm leakage rejected |
| Actual model PDF changed to two pages | A4 single-page condition rejected |

## Four-role desk review and held use

Teacher walkthrough covers preparation/own making/actual source encounter/rehearsal/fresh first response/key/next. Parent/carer walkthrough offers 20 optional free imagined/no-object bridges/private/pass without purchase/disclosure/family test. Imagined learner walkthrough includes short ordinary prompts, child musical purpose/choices/part ownership/version and exact route choices. Funder/reviewer walkthrough exposes source methods/rights/hash reproduction/substantive negative checks and limits. These are author design walkthroughs, not actual stakeholder feedback, satisfaction, access certification, benefit, transfer or cost-effectiveness evidence.

Independent educator music/age/access/timing review, actual consented learner/family feedback, exact local live-source approval, human audio/device/local-volume clearance and classroom pilot remain held. Wider actual music/context/authority/source response and actual own-work willing audience receipt remain separate. All actual maker/aural/scoped rhythm-entry/support/independence claims need evidence. No full Music/whole-year/standard attainment or official/cultural endorsement inferred.

Only this owned W37–38 folder authored; earlier packs frozen. No shared tool/index edits, staging, commit or push by this agent. Root review/commit separate.