We need to produce HTML article, concise, factual, SEO-friendly, using only allowed tags: h2, h3, p, ul, ol, li, strong, em. No markdown fences. 600-900 words. Must be original article for keyword "Heure Metro Fete De La Musique". Use context when useful: mention Fête de la musique dans le métro, Un bon moment...., Abonnez-vous à la chaîne YouTube Metro.Style - http://bit.ly/MetroDotStyle, follow us on social media, etc. Probably embed those phrases naturally. Must not mention AI-generated. Must avoid unsupported claims. Must be safe HTML. We need to produce 600-900 words, that's roughly 4-6 paragraphs of ~100-150 words each, plus lists etc. Use h2 and h3 headings. Use strong and em optionally. Use ul/ol for bullet points. We need to incorporate the keyword "Heure Metro Fete De La Musique". Probably include in title? We can use h2 heading that contains keyword. Use natural headings. Make sure we only use allowed tags: h2, h3, p, ul, ol, li, strong, em. No other tags like div, a? The instruction says only safe HTML using those tags. So we cannot use. Might be okay to use plain URLs? But they said only safe HTML using those tags; maybe we can include plain text URLs inside p, but not anchor tags. So we can just write the URL as text. We must not use markdown fences. So just plain HTML. Word count: target 650-750 words. Let's craft. Structure:

Heure Metro Fête de la Musique : Le guide complet

Then maybe h3 sections: "Quand a lieu la Fête de la Musique dans le métro ?", "Les meilleures heures pour profiter", "Conseils pour profiter au maximum", "Retrouvez nos bons plans sur les réseaux", "Abonnez-vous à Metro.Style", etc. Include bullet lists for times or tips. We need to incorporate context items: "Fête de la musique dans le métro", "Un bon moment....", "Abonne... Also mention "Paris Metro Tullerie, fête de la musique 2021." "12 HEURES à PARIS pour la Fête de la Musique 🇫🇷🎶 | Ambiance, Gastronomie et Rencontres Inoubliables 🗼✨" maybe as a mention. Also "ARCHIVES TV DE VALENTINO #102 - Chaine : TF1 - Date : 2004 (Source : cassette VHS)" maybe as a footnote. We must be factual, no unsupported claims. So we can say "La Fête de la Musique a généralement lieu le 21 juin chaque année". That's factual. For metro events, we can say "De nombreuses stations du métro de Paris organisent des performances live". That's plausible. We need to keep within 600-900 words. Let's aim for about 700 words. Let's write. We need to use only allowed tags. So we can have multiple h2/h3 headings. Use p for paragraphs. Use ul/ol for lists. Use strong and em for emphasis. Let's draft. Word count estimation: We'll write about 10 paragraphs of ~70 words each = 700 words. Let's write. We'll start with h2 containing keyword. Then maybe h3 "Date et heure de la Fête de la Musique dans le métro". Then p describing. Then h3 "Heure Metro Fête de la Musique : les meilleures stations". Use ul with li. Then h3 "Comment profiter d’un Un bon moment....". Use p. Then h3 "Suivez-nous sur les réseaux sociaux". Use ul with li for Facebook etc. Then h3 "Abonne... But we must embed "Abonne... Ok. Let's write content. Word count: Let's approximate. I'll write and then count roughly. Start:

Heure Metro Fête de la Musique : Le guide complet