tgcnzn/Interactive-Particles-Music-Visualizer ? reverse-engineered prompt

Build me a cool music visualizer web app that reacts to sound in real time and feels inspired by the ARKx Coala Music site.

I want a single page experience with a dark, polished look, a 3D particle scene, and smooth motion that changes with the music, like the particles are breathing and dancing to the beat. When audio plays, the visuals should sync to the rhythm and feel immersive, not just bounce randomly. Make it easy to run locally and view in the browser, and include a simple way to load or play a track so I can see the effect right away.

Use current best practices for modern browser based 3D visuals, and if you need to check anything up to date, look up the latest docs online. Keep the result clean, interactive, and visually impressive, with a good default demo that shows off the effect well.