explaingit

externalizable/bongo.cat

Analysis updated 2026-07-03

3,740JavaScriptAudience · generalComplexity · 1/5LicenseSetup · easy

TLDR

The source code for bongo.cat, a browser toy where pressing keyboard keys makes an animated cat play bongo drums in sync with low-latency audio, based on a popular 2018 internet meme.

Mindmap

mindmap
  root((repo))
    What It Is
      Browser keyboard toy
      Internet meme site
      MIT licensed
    How It Works
      Keyboard triggers paws
      Audio plays in sync
      lowLag.js audio
    Community
      Song examples
      GitHub Discussions
      Artist permission granted
    Tech
      JavaScript
      SoundManager 2
      Browser audio
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Tap out melodies like Happy Birthday or Ode to Joy on your keyboard using the bongo cat website

USE CASE 2

Browse or submit community song sequences in GitHub Discussions to play recognizable tunes on the bongo cat interface

USE CASE 3

Study how to build a low-latency browser audio project using lowLag.js and SoundManager 2 for timing-sensitive keyboard interactions

What is it built with?

JavaScriptHTMLCSS

How does it compare?

externalizable/bongo.catdamianavila/risepanva/node-oidc-provider
Stars3,7403,7393,739
LanguageJavaScriptJavaScriptJavaScript
Setup difficultyeasyeasyhard
Complexity1/52/54/5
Audiencegeneraldatadeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min
MIT license, use freely for any purpose, including commercial, as long as you keep the copyright notice. Artwork used with written permission from the original artist.

In plain English

Bongo Cat is the source code for the website at bongo.cat, a small interactive toy based on an internet meme. The meme originated in 2018 when an artist called DitzyFlama animated a cat drawing by StrayRogue to show it playing bongo drums. The website lets you press keys on your keyboard to trigger the cat's paws and play bongo sounds in sync. The site is a JavaScript project in the browser. It uses two audio libraries, lowLag.js and SoundManager 2, to play sounds with minimal delay across a wide range of devices, since timing matters when you are tapping along to music. Beyond the core interaction, the project has a community aspect. The README includes several song examples showing which number keys to press to tap out recognizable melodies, including Happy Birthday, Ode to Joy, In the End by Linkin Park, and Come as You Are by Nirvana. Users can browse and submit additional songs via GitHub Discussions. The repository gained attention quickly after launch. It was noticed and shared by both the original meme creator and the artist whose cat drawing was used, and later appeared in a YouTube reaction video by a major channel. The project is licensed under MIT. Permission to use the cat artwork was granted in writing by the original artist at the time the site launched.

Copy-paste prompts

Prompt 1
Looking at the externalizable/bongo.cat source code, how does it map keyboard key presses to the cat animation frames and trigger the corresponding bongo drum sounds?
Prompt 2
How does bongo.cat use lowLag.js and SoundManager 2 together to minimize audio delay when a key is pressed, and why are two audio libraries used instead of one?
Prompt 3
I want to build a similar browser toy with keyboard-triggered animations and sounds. Based on the bongo.cat codebase, what is the simplest way to wire up keydown events to audio playback and a sprite swap?

Frequently asked questions

What is bongo.cat?

The source code for bongo.cat, a browser toy where pressing keyboard keys makes an animated cat play bongo drums in sync with low-latency audio, based on a popular 2018 internet meme.

What language is bongo.cat written in?

Mainly JavaScript. The stack also includes JavaScript, HTML, CSS.

What license does bongo.cat use?

MIT license, use freely for any purpose, including commercial, as long as you keep the copyright notice. Artwork used with written permission from the original artist.

How hard is bongo.cat to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is bongo.cat for?

Mainly general.

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