A is a raised circle with the printed letter A; B is a raised striped square with printed B. These are keys for two invented electronic recipes, not instruments or evidence of what someone heard. Use broad fixed numbered slots, one source card per place. A neutral adult reads or moves only as the child directs. The optional sound cues require human listening and volume review. Fresh-check routes state the public task but no worked answer.
A · Two electronic recipes
File: print/two-recipes.svg / print/two-recipes.pdf. Exact content: Two original waveform traces: A has a 330 Hz sine component; B has 330 and 990 Hz components. Round A and striped-square B are labels, not listening results. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | A · Two electronic recipes | A and B are source recipes, not pitch or volume marks. | A · one component | B · added component | A | B | 330 Hz fundamental | 330 + 990 Hz | Two made-up electronic tone recipes. | Same stated 330 Hz fundamental. | Symbols show source choice, not how anyone heard. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Use one raised circle A card and one raised striped square B card. Read their technical component labels, without asking a child to feel the sound or copy the waves.
B · One source at four places
File: print/one-source.svg / print/one-source.pdf. Exact content: First four-place row A A A A; second row B B B B. Each row retains a single planned sound recipe. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | B · One source at four places | A and B are source recipes, not pitch or volume marks. | FIRST ROW · A stays | PLACE 1 | A | SOURCE A | PLACE 2 | A | SOURCE A | PLACE 3 | A | SOURCE A | PLACE 4 | A | SOURCE A | SECOND ROW · B stays | PLACE 1 | B | SOURCE B | PLACE 2 | B | SOURCE B | PLACE 3 | B | SOURCE B | PLACE 4 | B | SOURCE B | Each row keeps one source recipe. | Four planned event places; no source change in a row. | Actual listening, timing and level need observation. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Use four numbered large slots on each of two fixed strips. Set four round A cards on the first and four striped B cards on the second.
C · Place the source switch
File: print/source-switch.svg / print/source-switch.pdf. Exact content: Four-place A A B B plan with one marked source-change boundary after place 2. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | C · Place the source switch | A and B are source recipes, not pitch or volume marks. | READ FOUR SOURCE PLACES | PLACE 1 | A | SOURCE A | PLACE 2 | A | SOURCE A | PLACE 3 | B | SOURCE B | PLACE 4 | B | SOURCE B | CHANGE AFTER 2 | A A B B · one switch in source recipe. | The first B is at place 3, after place 2. | No higher pitch or louder sound is requested. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Fix A, A, B, B cards in four large slots. Put a broad raised boundary marker between slots 2 and 3.
D · Source and action lab
File: print/source-action.svg / print/source-action.pdf. Exact content: Two empty panels each separate SOURCE, ACTION and ACTUALLY OBSERVED, with NOT TRIED / QUIET ROUTE offered. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | D · Source and action lab | A and B are source recipes, not pitch or volume marks. | PAIR 1 · plan or actual safe trial | SOURCE: _ | ACTION: _ | ACTUALLY OBSERVED: ____ | OR mark: NOT TRIED / QUIET ROUTE | PAIR 2 · plan or actual safe trial | SOURCE: _ | ACTION: _ | ACTUALLY OBSERVED: ____ | OR mark: NOT TRIED / QUIET ROUTE | The same source can sound different with a new action. | Leave actual-observation lines blank unless a safe trial occurred. | No object needs to be touched or sounded by a child. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Provide two broad panels with raised SOURCE and ACTION fields and an independent ACTUALLY OBSERVED line; leave observations blank unless a safe event occurred.
E · Move one switch
File: print/move-switch.svg / print/move-switch.pdf. Exact content: First A A B B, then A B B B; only place 2 changes from A to B and the switch moves earlier. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | E · Move one switch | A and B are source recipes, not pitch or volume marks. | FIRST · keep this row | PLACE 1 | A | SOURCE A | PLACE 2 | A | SOURCE A | PLACE 3 | B | SOURCE B | PLACE 4 | B | SOURCE B | SECOND · change only place 2 | PLACE 1 | A | SOURCE A | PLACE 2 | B | SOURCE B | PLACE 3 | B | SOURCE B | PLACE 4 | B | SOURCE B | A A B B becomes A B B B. | Only place 2 changes A to B. | The one source switch moves earlier. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Keep two raised strips. Preserve first A A B B. In the second, replace only place 2 A with B; compare the boundary positions.
F · My sound-source palette
File: print/make-share.svg / print/make-share.pdf. Exact content: Four blank A/B source places and fields for intended idea, actual safe test and actual recipient/medium, if any. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | F · My sound-source palette | A and B are source recipes, not pitch or volume marks. | MY FOUR SOURCE CHOICES | PLACE 1 | A OR B | PLACE 2 | A OR B | PLACE 3 | A OR B | PLACE 4 | A OR B | A CIRCLE / B STRIPED SQUARE · use one per place | My intended music idea: _____ | Actually tested / what happened: ___ | Received by / medium, if chosen: __ | It is okay to keep this private or silent. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Use four blank numbered large slots and broad A/B cards. Child directs each card and any sharing; keep unheard and unreceived lines blank.
Fresh U · Read the source key
File: check/fresh-u.svg / check/fresh-u.pdf. Exact content: Unfamiliar A B B A B five-place score with four empty gap-marking boxes. Correct change boundaries are not printed. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | Fresh U · Read the source key | A and B are source recipes, not pitch or volume marks. | NEW FIVE-PLACE SOURCE KEY | PLACE 1 | A | SOURCE A | PLACE 2 | B | SOURCE B | PLACE 3 | B | SOURCE B | PLACE 4 | A | SOURCE A | PLACE 5 | B | SOURCE B | MARK EVERY GAP WHERE THE SOURCE CHANGES | ? | ? | ? | ? | Read all five source cards, then inspect four gaps. | A means circle; B means striped square. | Mark changes in source key, not pitch or volume. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Fix five raised source cards A, B, B, A, B and four empty broad gaps. Child marks every change without the adult placing markers.
Fresh V · One ending contrast
File: check/fresh-v.svg / check/fresh-v.pdf. Exact content: Four blank source places; public brief says A at places 1 to 3 and B once at place 4. No completed score or source-change marker is printed. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Original A/B sound-source key · quiet route | Fresh V · One ending contrast | A and B are source recipes, not pitch or volume marks. | MAKE A NEW ENDING FROM THIS BRIEF | PLACE 1 | A OR B | PLACE 2 | A OR B | PLACE 3 | A OR B | PLACE 4 | A OR B | KEY: A = CIRCLE · B = STRIPED SQUARE | Places 1, 2 and 3 use A. | Place 4 uses B once, at the end. | Mark the source-change gap; give your own reason. | The score is blank until you choose its cards. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile alternative: Offer four empty raised numbered slots, A circle and B striped-square cards. Read the public brief neutrally; the child directs all four placements and boundary.
Evidence limit: Printed source-choice, raised cards and waveform drawings show plans. Actual timbre hearing, sound production, comfort and audience receipt need separate observations.