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Octave Explainer

Plays notes on a small keyboard to show that an octave is a 2:1 frequency ratio.

Artifact by Simon Willison

IndexedApache-2.0EducationNo sign-up

Use it

Opens tools.simonwillison.net in a new tab. Nothing to install.

You provide
Keyboard clicks
You get
Sound and frequency visuals
Account
No sign-up needed
AI
No AI: a plain tool
Your input
Not stated: check the tool's privacy notes before using private data
Price
Free to use
Made with
AI-built app
Source
Open source
Link check
Answered on Oct 31, 2026

About

Octave Explainer is an AI-built single-page app in the education category (music theory). It opens in your browser, so there is nothing to install. You provide keyboard clicks and get sound and frequency visuals. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (simonw/tools).

Category: Education · music theory

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Details

Auth
No auth
License
Apache-2.0
First seen
Oct 31, 2026
Last checked
Oct 31, 2026
Source
GitHub

More from Simon Willison

Cite this page

Octave Explainer: free online tool. Agent Mart. https://agentmart.dev/artifacts/octave-explainer (last updated 2026-10-31)