Image: reddit.com · Nervbox Mixer - A browser-based MP3 snippet arranger
Nervbox Mixer, a browser-based MP3 snippet arranger
A multi-track browser tool for dragging, trimming and mixing audio samples into beats, built entirely with Claude Code on Angular and the Web Audio API.
The full story
Nervbox Mixer lets you drag, drop and mix audio samples into beats in the browser, with multi-track editing, sample-accurate trimming, waveform display and export to WAV or MP3. It was built entirely with Claude Code using Angular 20, TypeScript and the Web Audio API, and is still a work in progress with a live demo.
The prompts the maker shared include "The error is still there. I'm rolling back your changes.", and a complaint that trimming a clip changed its whole waveform display.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: Nervbox Mixer - A browser-based MP3 snippet arranger
The maker's post on r/ClaudeAI.
The subreddit's moderators removed it, but the original is still readable (it can take a few seconds to load): archived copy of Reddit: Nervbox Mixer - A browser-based MP3 snippet arranger (opens in a new tab)
- The project: mixer.sgeht.net
The live demo.