How a CLI Challenge Helped Me Complete My Website

David L. Harper — Tue, 31 Mar 2026 04:29:43 +0000

How a CLI Competition Finally Helped Me ‘Complete’ My Website
A few months ago, I jumped into the GitHub Copilot CLI Competition mostly for fun. I wanted to see what the tool could do, maybe build something quirky, maybe learn something new. What I didn’t expect was that the challenge would end up giving me the momentum I needed to finally complete something I’d been circling for years:

My website, www.atonalfugue.com.

Not “complete” as in perfect.
Complete as in coherent.
Complete as in “this finally feels like a real place.”

The CLI challenge didn’t just help me build a tool — it helped me finish a world I’d been slowly assembling in pieces.

The Challenge That Shifted My Momentum
For the competition, I built a small composition‑focused CLI tool — something that let me experiment with musical ideas quickly without breaking flow. It wasn’t huge, but it was alive. It reminded me how much I love:

Music.

It began with a simple math equation that I used to understand a complex music theory, Serialism, created by Arnold Schoenberg. I further developed the equation into a functioning theory that can be applied to music. In essence, it allows one to modulate entire matrices of music - and further developing the ability to later divide matrices with other matrices in a less synthetic way.

When the theory is taught to the next educational cycle, students of music will be able to visualize and internalize entire vectors in the way we work slow patterns on a page. Vectored emotions is a scary thought to think of when students grow and are enhanced versions of humans; but how much have we learned are in the vein of progress leading to anyone to raise an eyebrow?

Anyway, thank you for the wonderful competition, and thank you to contestants. Big congratulations to the winners! Ya'll are a true inspiration!

Website: https://www.atonalfugue.net

Thanks for reading — and thanks to the team for hosting a challenge that ended up reshaping far more than I expected.

Atonal Fugue

David L. Harper — Wed, 04 Feb 2026 04:53:51 +0000

This is a submission for the GitHub Copilot CLI Challenge.

What I Built

I set out to explore how far GitHub Copilot CLI could take me when building a complex, music composition tool. The result is a heavyweight interface that streamlines complex tasks and reduces the friction between idea and execution.

It’s intentionally complex— something you can run, test, and iterate on instantly creating atonal fugues— but it still carries the spark of experimentation that makes these challenges fun.

Demo

You can find the project here:

[https://github.com/Vonias/Portfolio-and-Music-Analyzer/tree/master]

To show it in action, I’ve included:

A short walkthrough of the simplest composition
Screenshots of the musical interface
A generator that creates an example of atonal fugue

Link to tutorial video:

https://youtu.be/prgtFHOEj1U

My Experience with GitHub Copilot CLI

Working with GitHub Copilot CLI felt like pairing with a teammate who specializes in removing friction. I used it to:

Scaffold commands and boilerplate faster than I could type them
Generate and refine shell snippets
Explore alternative approaches when I hit a dead end
Keep momentum by offloading repetitive or mechanical tasks

The biggest impact wasn’t speed alone — it was the sense of flow. Copilot CLI let me stay inside the design process, inside the idea, without constantly switching contexts.

Thanks for reading, and thanks to the GitHub Copilot team for hosting the challenge.

Forem: David L. Harper

How a CLI Challenge Helped Me Complete My Website

Atonal Fugue

What I Built

Demo

My Experience with GitHub Copilot CLI