Analyze User Input:

• Role: World-Class Musicologist, Lead Music Educator, Master Arranger/Producer.
• Task: Write a comprehensive, deeply informative, engaging masterclass post about “Major and Minor Chord Shapes on Piano”.
• Language: Strictly French (fr).
• Branch/Category: Piano Fundamentals.
• Critical Directives:
  • NO generic/vague filler.
  • SPECIFIC music theory details: exact chord progressions, rhythmic breakdown, harmonic/melodic techniques, historical context, key pioneers, landmark recordings.
  • PEDAGOGICAL STRUCTURE: 3 phases (Phase 1: Fundamentos, Phase 2: Desarrollo, Phase 3: Maestría).
  • FORMATTING: GitHub-flavored Markdown, GitHub-style alerts (> [!NOTE], etc.), ASCII rhythm grids/chord boxes, “Practice Challenge / Reto Práctico”, Key Terms Glossary.
  • EMojis, Colors for key terms, Degree Color System (specific hex codes), Markdown tables/lists, strict structure (# Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary). Wait, the prompt says “Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.” but also says “PEDAGOGICAL STRUCTURE (Divide into 3 distinct learning phases): Phase 1, Phase 2, Phase 3.” I need to reconcile these. I’ll structure it as requested: Title, Introduction, Main Concept (which will contain the 3 phases), Examples, Practical Summary. I’ll make sure the phases are clearly marked within the Main Concept or as subsections.
  • TRANSLATION/HTML INSTRUCTION: This is a bit contradictory/confusing. The prompt says: “The post.content field contains HTML with music theory content. Translate ONLY the visible text content to fr while preserving the exact HTML structure… IMPORTANT: Also translate the post title… CRITICAL: Preserve all placeholder markers like __MUSICXML_BLOCK_0__… STRICTLY FORBIDDEN: Do NOT generate or mention ‘MusicXML’… Return the translated HTML content with the title translated.”
  • Wait, the prompt gives an “ORIGINAL DRAFT/TOPIC TO ENRICH & TRANSFORM:” which is in Markdown, not HTML. But then it says “The post.content field contains HTML with music theory content. Translate ONLY the visible text content to fr while preserving the exact HTML structure…” This is a common prompt template artifact. I should ignore the HTML translation constraint if the input is Markdown, but I must follow the core instruction: write a comprehensive masterclass post in Markdown format in French, following all the other directives. I will adapt the content to be a rich, expert-level masterclass in French, using Markdown, incorporating the required elements (phases, specific theory, emojis, colors, degree colors, tables, lists, alerts, ASCII grids, practice challenge, glossary). I will strictly follow the structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary. I’ll embed the 3 phases within the Main Concept or as subsections. I’ll make sure to use the exact degree color hex codes if I mention scale degrees. I’ll use the text syntax as requested. I’ll add GitHub alerts. I’ll create ASCII grids for chord shapes. I’ll write everything in French.

Deconstruct & Plan Structure (in French):

• # Formes des Accords Majeurs et Mineurs au Piano 🎹
• ## Introduction
• ## Concept Principal (Main Concept)
  • Phase 1: Les Fondamentaux (La Graine) 🌱
  • Phase 2: Le Développement (La Croissance) 🌿
  • Phase 3: La Maîtrise (La Fleur) 🌸
• ## Exemples
• ## Résumé Pratique
• > [!NOTE] / > [!TIP] / > [!IMPORTANT] alerts integrated appropriately.
• ASCII rhythm/chord grids.
• Practice Challenge / Reto Práctico.
• Glossaire des Termes Clés.
• Strict adherence to degree colors if mentioned (I’ll weave in scale degrees naturally to use the color system).
• Use text for key terms.
• No YAML/JSON. Pure Markdown.

Draft Generation - Section by Section (Mental Refinement in French):

Title: # Formes des Accords Majeurs et Mineurs au Piano 🎹

Introduction: Brief, engaging, setting the stage. Emphasize that triads are the harmonic engine. Introduce the concept of the triade and the critical role of the tierce. Mention the pedagogical approach (3 phases).

Main Concept: I’ll structure this with the 3 phases as requested.

• Phase 1: Les Fondamentaux (La Graine) 🌱 - Focus on the exact formulas, intervals in semitones, keyboard geometry. Use tables for semitone distances. Explain the major vs minor third difference. Introduce scale degrees with the specific hex colors: [I](#E53E3E), [II](#38A169), etc. Wait, the prompt says “Degree I: #E5E3E3E” format. I’ll use it when discussing chords in context of keys.
• Phase 2: Le Développement (La Croissance) 🌿 - Practical applications, chord voicings, piano patterns, voice leading, harmonic progressions. Introduce specific progressions like I - IV - V7 - I, ii7 - V7 - Imaj7. Explain how to voice them in root position, inversions. Discuss rhythmic placement (e.g., 4/4 time, syncopation, bass anticipation).
• Phase 3: La Maîtrise (La Fleur) 🌸 - Advanced reharmonizations, extensions (9ths, 11ths, 13ths), modal interchange, professional tricks for pianists (voicing shell chords, drop 2/3, contrapuntal independence). Improvisation concepts over triads.

Examples: Concrete piano examples, chord shapes in all 12 keys (condensed but precise), ASCII keyboard representations, specific exercises.

Practical Summary: Recap, practice schedule, final tips.

Alerts: Insert > [!NOTE], > [!TIP], > [!IMPORTANT] at relevant points.

ASCII Grids: Create a simple ASCII representation of C major and C minor on a 5-octave slice or just a hand shape diagram.

Practice Challenge / Reto Práctico: Specific daily exercises.

Glossary: Key terms in French.

Let’s carefully map the requirements:

• Language: French.
• Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.
• Phases: Clearly marked within Main Concept.
• Specifics: Exact progressions, rhythmic breakdown, harmonic/melodic techniques, historical context, pioneers, landmark recordings.
• Formatting: Markdown, emojis, colors, degree colors, tables, lists, alerts, ASCII grids, practice challenge, glossary.
• No HTML/JSON/YAML. Pure Markdown.
• I will integrate the degree color system exactly as specified: [I](#E53E3E), etc. Wait, the prompt says text format for key terms, and for degrees: Degree I: #E53E3E. I’ll use the exact hex codes in markdown links or inline styles if possible, but markdown doesn’t support inline styles well. I’ll use the format [I](#E53E3E) as requested, or just [I] with a note, but I’ll stick to the exact syntax requested: [I](#E53E3E). Actually, the prompt says: Degree I: #E53E3E, Degree II: #38A169... I will use them as markdown links or just text with the hex code attached as requested. I’ll format degrees like [I](#E53E3E) to be safe.

Let’s draft carefully, ensuring all constraints are met.

Self-Correction/Verification during planning:

• The prompt says: “Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.” I must follow this exactly.
• The prompt says: “PEDAGOGICAL STRUCTURE (Divide into 3 distinct learning phases): Phase 1, Phase 2, Phase 3.” I will place these inside ## Main Concept.
• “Use proper Markdown syntax (# for headings, * for emphasis, etc.). EMOJIS: Use emojis naturally… COLORS: Highlight key musical terms using text… DEGREE COLOR SYSTEM: For scale degrees, use these specific Hex colors: Degree I: #E53E3E…” I will use the exact syntax [I](#E53E3E) etc.
• “Include GitHub-style alerts: > [!NOTE], > [!TIP], > [!IMPORTANT].”
• “Include clear visual ASCII rhythm grids or chord box representations where applicable.”
• “Include a ‘Practice Challenge / Reto Práctico’ section for students.”
• “Include a Key Terms Glossary at the end.”
• “Historical context, key pioneer artists, and landmark recordings/albums.” I’ll add this to the Introduction or Main Concept.
• “Exact chord progressions… Exact rhythmic breakdown… Harmonic & Melodic techniques…”
• Language: French.

I will now generate the content step-by-step in French, carefully checking each constraint.

Structure:

Formes des Accords Majeurs et Mineurs au Piano 🎹

Introduction

Concept Principal

### Phase 1 : Les Fondamentaux (La Graine) 🌱
### Phase 2 : Le Développement (La Croissance) 🌿
### Phase 3 : La Maîtrise (La Fleur) 🌸

Exemples

Résumé Pratique

[!NOTE] …
[!TIP] …
[!IMPORTANT] …

Défi Pratique / Reto Práctico 🚀

Glossaire des Termes Clés 📖

I’ll weave the degree colors into the harmonic analysis sections. I’ll use triade, tierce, fondamentale, etc.
I’ll make sure the ASCII grid represents chord shapes or rhythmic placement.
I’ll include specific progressions: I - vi - ii - V7, ii7 - V7 - Imaj7, tritone subs, Cmaj9, D9, F#m7b5.
I’ll include rhythmic breakdown: 4/4, syncopation, bass anticipation (baixaria style adapted to piano), clave patterns if relevant to piano accompaniment, but I’ll focus on piano-specific rhythmic concepts like left-hand ostinato, right-hand syncopation, and harmonic rhythm.
I’ll add historical context: Bach’s well-tempered clavier, Chopin’s voicings, Bill Evans’s reharmonization, landmark recordings like “The Shape of Jazz to Come” or “Kind of Blue” for modal/triad expansion, but I’ll keep it focused on piano fundamentals.
I’ll strictly avoid HTML/JSON/YAML. Pure Markdown.
I’ll translate everything to French.

Let’s draft.
Self-Correction/Refinement during drafting thought:

• The prompt says: “Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.” I will strictly follow this heading structure. The phases will be subsections under ## Main Concept.
• I need to make sure the degree color system is applied exactly as: [I](#E53E3E), [II](#38A169), etc.
• I will use text for key terms.
• I will include GitHub alerts.
• I will include ASCII grids.
• I will include Practice Challenge and Glossary.
• All in French.
• No filler. Specific theory details.
• I’ll carefully check the exact wording for the degree colors: “Degree I: #E53E3E, Degree II: #38A169, Degree III: #ECC94B, Degree IV: #06B6D4, Degree V: #ED8936, Degree VI: #3182CE, Degree VII: #9333EA”. I’ll use them as markdown links: [I](#E53E3E), etc.
• I’ll make sure the HTML translation instruction from the prompt is handled by ignoring it since the output must be pure Markdown as per the main directive, and the prompt says “The post.content field contains HTML… Translate ONLY the visible text content to fr while preserving the exact HTML structure… Return the translated HTML content with the title translated.” This is contradictory with “STRICTLY FORBIDDEN: Do NOT use YAML format, JSON format, or any structured data block. The output MUST be pure Markdown.” I will prioritize the pure Markdown requirement and the explicit structure requested. I will output pure Markdown.

Proceeding.
Draft generation starts now.
I will carefully craft each section in French, ensuring all constraints are met. I’ll use markdown tables for semitone intervals, lists for chord shapes, ASCII for keyboard/rhythm, alerts for pedagogical notes, and embed the specific theory details requested. I’ll maintain a professional, expert tone suitable for a masterclass. All text will be in French. I’ll double-check the degree color syntax. I’ll make sure the structure matches exactly. I’ll avoid any extra text. I’ll output only the Markdown.
Let’s write it out.
Self-Correction/Verification during thought:

• Check degree color syntax: The prompt says Degree I: #E53E3E. I will use [I](#E53E3E) format.
• Check color syntax: text. I will use triade, etc.
• Check structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary. I will strictly follow this.
• Check phases: I will put them under ## Main Concept as ### Phase 1..., ### Phase 2..., ### Phase 3....
• Check alerts: > [!NOTE], > [!TIP], > [!IMPORTANT].
• Check ASCII: I’ll create a keyboard layout and a rhythmic grid.
• Check practice challenge & glossary: I’ll add them at the end, but the prompt says structure ends with ## Practical Summary. I’ll place the challenge and glossary inside or right after ## Practical Summary to comply, or make them subsections. The prompt says “Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.” I’ll stick to this exact top-level structure. I’ll put the challenge and glossary as subsections under ## Practical Summary or just after it, but to be safe, I’ll keep the exact headings requested.
• I will ensure all musical terminology is in French.
• I will ensure no HTML is output. Pure Markdown.
• I will ensure all constraints are met.

Generating now.
Output Generation matches the response.
I will carefully craft the French text, ensuring precise music theory, pedagogical structure, and formatting. I’ll use the exact color syntax requested. I’ll include the ASCII grids. I’ll add the alerts. I’ll make it comprehensive and expert-level. All in French. No extra text. Pure Markdown.
Let’s do it.
[Output Generation] -> Proceeds
(Self-Correction/Refinement during generation prep): I notice the prompt says “Structure: # Title, ## Introduction, ## Main Concept, ## Examples, ## Practical Summary.” I will strictly use these as H1 and H2 headings. The phases will be H3 under Main Concept. The practice challenge and glossary will be H3 under Practical Summary or right after, but I’ll keep the exact structure. I’ll make sure the degree colors are applied exactly as [I](#E53E3E) etc. I’ll use term syntax. I’ll ensure all musical concepts are precise. I’ll write in French. All good.
Output matches the final response.
Proceeds.
[Output Generation] -> See response.