I made an instrument that turns typing into lofi music

Claude and I vibed a little thing called keystrokes.

It’s a local JavaScript, browser-rendered “instrument” for typing. Open the demo , turn sound on, click start, and type whatever. Your keys become a generative lofi track, and the page draws the notes as they happen.

It’s not perfect. Sometimes it’s a little goofy, sometimes it’s weirdly nice. But it’s fun enough to keep you company while you wait for Claude/Codex/tests/builds/whatever to finish thinking.

Demo, no install: https://aetherwing-io.github.io/keystrokes/

Or, run the install script to clone and run locally. The local version works across apps, just playing off keystrokes. It plays notes from whatever app you’re typing in, tails Claude/Codex transcripts, and turns a work session into a two-voice soundtrack of you plus the assistant.

GitHub: https://github.com/aetherwing-io/keystrokes