Two worked fiction-domain swaps per day keep the same musical operation. Check-day swaps are after the first fresh response is saved. Do not present these as copied songs, real safety signals, cultural motifs or proven audience effects.
| Day | Worked swap 1 | Worked swap 2 |
|---|---|---|
| 41 | Paper library: T X REST X REST / T X REST X REST → exact echo, four planned events. | Planet poster: four-place T repeated in second panel → same local rests 2 and 4. |
| 42 | Garden board: T / T changes reply local X3 to REST → T / X REST REST REST, three total events. | Cardboard lighthouse: leave first T and quiet the reply's third cell → one reply event. |
| 43 | Toy theatre: circle over T, triangle over T′ → arrow from first whole phrase to second. | Stationery cartoon: triangle over first T, circle over reply T′ → role order reverses but cells stay. |
| 44 | Pretend bridge: T / T′ → choose one-event answer, three events full score. | Paper telescope: T / U where U REST X REST X → reply begins quietly, four full-score events. |
| 45 | After Check: paper greenhouse K X REST REST X / K → change reply local X4 to REST, yielding X REST REST REST. | After Check: drawn ferry L X X REST REST / L → change reply local X2 to REST, yielding X REST REST REST. |
| 46 | Paper workshop: circle/T then triangle/T′ → different source labels, same three rhythmic events. | Space map: triangle/T then circle/T′ → role labels reverse; T and T′ cells stay fixed. |
| 47 | Robot drawing: circle/T then triangle/T′ → swap symbols only; score remains T / T′. | Puzzle poster: triangle/T then circle/T′ → change to circle/T then triangle/T′; three events remain. |
| 48 | Imaginary café: X X REST REST / X REST REST REST → one changed reply cell at local 2. | Fabric design: REST X REST X / REST X REST X → child-made exact echo, four events. |
| 49 | Child's original score received by a willing educator → log actual paper share, no acoustic claim. | Child's approved original sound received by a willing adult → log actual sound share, no assumed feeling. |
| 50 | After Check: paper garden M REST X X REST / M → change reply local X3 to REST, yielding REST X REST REST. | After Check: toy gallery N X REST REST X / N → change reply local X4 to REST, yielding X REST REST REST. |