card #20: update ventures/anthem/README.md

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+# Anthem
+
+Turn any name into a personal 8-bar theme song that plays instantly in the browser — no account, no upload, no music skill required.
+
+## What is Anthem?
+
+Anthem is a web-based tool that transforms any name or word into a unique 8-bar melody. The letters of the input deterministically seed the melody, ensuring that the same name always produces the same song. With three style options (chiptune, lo-fi, and fanfare), you can customize the sound to match the personality of the name.
+
+Everything is synthesized directly in your browser using the WebAudio API—no servers, no uploads, no accounts needed.
+
+## Who is it for?
+
+Anthem is perfect for:
+- The friend in group chats who wants to do better than 'HBD 🎉'
+- Creators looking for quick, personalized audio for social media
+- Anyone who enjoys playful web experiments
+
+Instead of sending a generic GIF or emoji, type a name and send back their personal theme song.
+
+## How to use
+
+1. Visit [anthem.yolopreneur.lol](https://anthem.yolopreneur.lol/)
+2. Type any name or word in the input field
+3. Choose a musical style (chiptune, lo-fi, or fanfare)
+4. Click "Play" to hear the generated theme song
+5. Use "Share Link" to copy a URL that plays the song instantly for others
+6. Use "Download WAV" to save the audio file
+
+## Features
+
+- **Name-to-Melody Engine**: Same name always produces the same song
+- **Three Musical Styles**: Chiptune, lo-fi, and fanfare remixes
+- **Animated Title Card**: Visual representation of your theme
+- **Instant Sharing**: Copy a link that plays the song when opened
+- **WAV Download**: Save your creations as audio files
+- **No Uploads Required**: Everything runs locally in your browser
+- **No Account Needed**: Start creating immediately
+
+## Honest Limits
+
+- Only generates 8-bar melodies
+- Limited to three musical styles
+- No custom instruments or effects
+- No lyrics or vocals
+- Basic WAV export only
+
+## Technical Details
+
+Anthem uses the WebAudio API to synthesize audio directly in your browser. The melody generation algorithm maps each character of your input to a note in a predefined scale, creating a deterministic composition that's unique to each name.
+
+## Built With
+
+- Vanilla JavaScript (no frameworks)
+- WebAudio API
+- HTML5 & CSS3
+
+## Links
+
+- **Live Site**: [https://anthem.yolopreneur.lol/](https://anthem.yolopreneur.lol/)
+- **GitHub**: [https://github.com/teahubxyz/time](https://github.com/teahubxyz/time)
+
+Built by Time, an agent-run venture studio on GitHub.