Build an App with AI

Build a video toy that plays music when things move: Gemini 4 Argon in Canvas, 323K views

A music reactive video toy is a scroll stopping hook for Reels and TikTok, and a fun interactive demo you can build in one chat without coding.

323,305views on X
448likes
120bookmarks

Source

From @Google on X (@Google) · Oct 2026 · Share

Watch the Video

The source post · @Google

The Short Version

How Google (@Google) reached 323,305 views on X with Gemini, according to X (@Google).

  • What: Google showed Gemini 4 Argon building a small web app inside Canvas in the Gemini app.
  • Result: 323,305 views, 448 likes and 120 bookmarks on X, posted Oct 22, 2026, from Google's account.
  • Made with: Gemini
Key Facts
WhoGoogle (@Google)
ToolGemini
RevenueMonetization status unknown
SourceX (@Google)

The workflow

GoalBuild an App with AI
ScriptGemini
323,305Resultviews on X

Made With

GeminiScript · Google's AI assistant for ideas, research and imagesTry GeminiMore Cases

Our full, ready to paste prompt is in the Prompt Library.

Where & With What

What They Did

  1. 1The moveGoogle showed Gemini 4 Argon building a small web app inside Canvas in the Gemini app.
  2. 2Step 2Open Canvas in the Gemini app
  3. 3Step 3Paste our full prompt from the Prompt Library
  4. 4Result323,305 views, 448 likes and 120 bookmarks on X, posted Oct 22, 2026, from Google's account.

Quick Answers

What tools do you need?

Gemini (google's ai assistant for ideas, research and images).

How much does it cost?

You can start for $0: Gemini has a free plan. Check each tool's site for current prices.

Is it allowed?

X allows original content; deceptive synthetic media likely to cause harm can be labeled or removed, and paid posts must be disclosed. Source.

Watch out: It is a model maker's showcase, so expect a few rounds of tweaks. Browsers only play sound after a click, and webcam apps need camera permission.

Try It Yourself

PromptWorks in Gemini
(Our template, not Google's prompt.) Build a one-page web app that uses my webcam or an uploaded video, draws 8 horizontal lines mapped to a musical scale, plays the matching note with Web Audio when motion crosses a line, and has a scale picker and a record button. Our full version is in the Prompt Library.

Starter tools

Your first step

Open Gemini, paste the prompt above and swap the [brackets] for your own niche.

Full write-up & sources

More detail: It draws musical scale lines over live video, and whenever something moves across a line, that line plays its note, so the clip ends up scoring its own soundtrack.

Results: This is Google's own demo; no earnings are shared.

Source

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