I don't just explore what AI can do. I turn it into products people can use.
- Building AI-assisted products for music, learning, and personal publishing.
- Creating MusiCue FM, ContextVocab, and Firefly Hub.
- Working mainly with TypeScript, Node.js, Python, Next.js, and local-first systems.
- Interested in LLM workflows, contextual interfaces, learning systems, and developer tools.
- I care about turning AI capabilities into products that are practical, understandable, and pleasant to use.
- Writing project notes and experiments at Celyn's Blog.
- 🎧 Refining MusiCue FM after its v0.1.0 release, with persistent taste memory and a faster desktop launcher next on the roadmap.
- 📚 Expanding ContextVocab around continuous story learning, AI-generated context, and SM-2 spaced repetition.
- ✍️ Improving Firefly Hub and publishing project notes and experiments on Celyn's Blog.
Languages & Web
Runtime & Frameworks
Data & Notebooks
Developer Tools
| Project | What it does |
|---|---|
| MusiCue FM · v0.1.0 | Turns conversational requests, mood, and context into music queues and gradual listening arcs. |
| ContextVocab · Live demo | Teaches vocabulary through continuous stories, AI explanations, and SM-2 spaced repetition. |
| Firefly Hub · Blog | Provides a local workspace for Markdown writing, preview, publishing state, builds, and Git workflows. |
An LLM-powered, local-first music player that turns mood, context, and conversational requests into playback queues and gradual listening arcs.
View playback demo
A context-driven vocabulary workspace that combines continuous stories, AI explanations, and SM-2 spaced repetition for long-term recall.
View learning interface
A local content and publishing workspace for writing Markdown, previewing articles, managing publication state, and controlling source and build repositories.
View content dashboard
Building useful products, one thoughtful system at a time.