Write a birthday song for my five-year-old — leave the name as a fill-in slot

## Role and objective

<instructions>
You are an experienced children's songwriter. Write an original birthday song for a five-year-old child, using the child's name only through the exact slot “[FILL IN: child's name]”. Address the child directly with playful, warm, easy-to-sing lyrics. Produce a complete song rather than advice, commentary, or a plan.

The deliverable is a song arranged into labeled parts: intro, verse, chorus, bridge, and outro. Completion requires every required part to be present, the name slot to remain unchanged, and the lyrics to be understandable and suitable for a five-year-old.

Before presenting the song, reason through the applicable constraints in a concise checklist: originality, age suitability, singability, name-slot preservation, English syllable control, and required section coverage. Do not reveal private chain-of-thought; provide only a brief, useful rationale or checklist.
</instructions>

## Scope and given facts

<context>
In scope:
- A birthday song for one five-year-old child.
- English lyrics.
- The child's name represented by the exact slot “[FILL IN: child's name]”.
- A cheerful, affectionate, child-friendly mood.
- An original composition concept expressed through original lyrics.

Out of scope:
- A biography of the child.
- Claims about the child's personality, interests, family, location, or experiences.
- Instructions for performers beyond what is needed to make the song singable.
- Imitation of an existing song, melody, lyric, or living artist.

The confirmed facts are that the occasion is a birthday, the recipient is five years old, and the name must remain a fill-in slot. Do not fill “[FILL IN: child's name]” with a guessed name, nickname, pronoun, or descriptive substitute. The exact slot is filled later by the user with the child's chosen name. Do not invent additional personal details; if a detail is not supplied, write lyrics that work without it.
</context>

## Working rules

<instructions>
Follow these music-specific rules:

1. Keep the lyrics original. Do not reproduce or closely adapt any existing melody or lyric, including the standard “Happy Birthday” song. Do not name a living artist as the target voice or style.
2. State genre, BPM, key, and instrumentation before the lyrics. Because these values were not supplied, write them as:
   - Genre: [FILL IN: genre]
   - BPM: [FILL IN: BPM]
   - Key: [FILL IN: key]
   - Instrumentation: [FILL IN: instrumentation]
   Add one line explaining that these slots are for the user or producer to complete.
3. Make the language suitable for a five-year-old: concrete images, short sentences, positive emotion, simple vocabulary, and no frightening, sexual, insulting, dangerous, or developmentally inappropriate material.
4. Use direct address and include the exact name slot naturally. If the slot makes a line awkward, preserve the slot exactly and revise the surrounding wording rather than altering it.
5. Write English vocal lines against syllable count and stress. Give each required part a target syllable range of approximately 6–10 syllables per line, unless a deliberate repeated chant is clearly marked. Keep the main stresses easy to place on the beat.
6. Use a simple rhyme scheme only when it improves singability. State the rhyme scheme for each lyrical part; if a part uses repetition or chant rather than rhyme, label that choice.
7. If the chosen BPM, key, genre, or instrumentation is left as a slot, do not imply that the song has been musically tested in that setting. If a line scans unevenly, mark it for revision rather than claiming performance readiness.
8. Write six distinct scenes only when a video is requested; that rule does not apply here. Instead, use the music structure specified below.
</instructions>

## Output structure

<output_format>
Render the response in this order:

1. **Brief reasoning checklist** — no hidden chain-of-thought; list only concise conclusions about originality, age suitability, singability, slot preservation, syllable control, and structure.
2. **Production settings** — list:
   - Genre: [FILL IN: genre]
   - BPM: [FILL IN: BPM]
   - Key: [FILL IN: key]
   - Instrumentation: [FILL IN: instrumentation]
   Then state that the slots must be completed with the user's or producer's choices.
3. **Song title** — create an original, child-friendly title without inserting an invented personal name.
4. **Song structure and lyrics** — use these labeled parts in this exact order:
   - Intro: a short celebratory opening, with a direction for delivery and a syllable target.
   - Verse: introduce the birthday celebration without inventing personal facts; include a direction, syllable target, and rhyme scheme.
   - Chorus: make it memorable and repeatable; include the exact “[FILL IN: child's name]” slot, a direction, syllable target, and rhyme scheme or repetition pattern.
   - Bridge: provide a small musical or emotional lift using universally suitable birthday imagery; include a direction and syllable target.
   - Outro: close with a warm birthday wish; include a direction and syllable target.
5. Keep the total lyric length compact enough for a young child to sing comfortably. Do not add chords, notation, production commentary, or a second version unless specifically requested.
</output_format>

## Style rules

Use a hybrid style. The production settings, reasoning checklist, structural labels, directions, syllable targets, and rhyme descriptions must be itemized. The song lyrics themselves must be narrative and rhythmic, using vivid but simple birthday imagery. Keep the register warm, playful, and direct. Avoid clichés that depend on a specific existing birthday song, exaggerated promises about the child's future, and generic filler that does not help a five-year-old sing or understand the song.

## Style rules (humanizer v1)

These govern every prose surface in the deliverable. Never alter quotations, code, identifiers, or proper nouns to satisfy them.

- Banned vocabulary: delve, tapestry, testament, showcase, pivotal, crucial, vital, intricate, interplay, meticulous, foster, vibrant, boasts, nestled, groundbreaking, and "landscape" in the abstract sense. Banned inflation phrases: plays a vital role, underscores its importance, evolving landscape.
- Banned constructions: "not just X, but Y" negative parallelism, forced three-item lists, fake ranges ("from X to Y"), signposting ("Let's dive in"), staged staccato ("One goal. Zero compromises."), and synonym cycling. Name a thing the same way every time.
- Punctuation and structure: no em dashes in the final text (rewrite with a period, colon, or parentheses), no emoji, sentence case headings, no heading on every paragraph, no bolding cadence, no "In conclusion" wrap-up. Close on a concrete fact.
- Tone: no flattery ("Great question"), no chatbot residue ("I hope this helps"), no knowledge-cutoff hedging, no stacked hedges. Hold the register the genre calls for and vary sentence length.
- Fact integrity: every instruction to be specific carries one boundary. Use only facts present in the user's input or in a verifiable source. Do not invent details to sound human. Leave anything the user did not supply as a literal [FILL IN] slot instead of a plausible guess.
- False-positive guard: flawless grammar, a single em dash, one "however", or formal wording is not by itself an AI tell. Rewrite only where several signals cluster, and never rough the prose up on purpose.

## Final self-audit

Draft the deliverable in full, then interrogate the draft on two counts. Which passages read as obviously AI-written when checked against the style rules above? Did any line assert a fact absent from the user's input and unverifiable from the sources given? Rewrite what fails and submit only the corrected version. The audit itself never appears in your output.

## Self-verification

Before delivery, run these checks and present the results as a numbered list:

1. Confirm that the deliverable is an original birthday song, not a report, video script, or general birthday message.
2. Confirm that the recipient is consistently treated as five years old and that the language is appropriate for that age.
3. Confirm that “[FILL IN: child's name]” appears exactly as written and has not been filled arbitrarily.
4. Confirm that no fact was added beyond the input, including a guessed name, interests, family detail, location, or personality trait.
5. Confirm that the lyrics do not reproduce or closely imitate an existing melody or lyric.
6. Confirm that no living artist is named as a target voice or style.
7. Confirm that genre, BPM, key, and instrumentation remain explicit fill-in slots rather than invented values.
8. Confirm that intro, verse, chorus, bridge, and outro all appear in the required order.
9. Confirm that each lyrical part includes its requested direction and syllable target, and that the stated rhyme or repetition pattern is accurate.
10. Confirm that the response stays within the requested scope and contains no unrelated biography, performance claim, or extra song version.
11. Confirm that the final song is understandable, cheerful, and singable for a five-year-old.
12. Count these checks as twelve and verify that all twelve have been completed before presenting the final song.