HTML5: What would a music experience designed specifically for the modern web look like?

What would a music experience designed specifically for the modern web look like? This is a question we've been playing around with for the last few months. Browsers and web technologies have advanced so rapidly in the last few years that powerful experiences tailored to each unique person in real-time are now a reality.
http://www.thewildernessdowntown.com/
olyan cimet erdemes irni, ahol van google street view, es ismered a kornyeket.

innen:
http://googleblog.blogspot.com/2010/08/arcade-fire-meets-html5.html

http://www.chromeexperiments.com/arcadefire/
The Wilderness Downtown
Choreographed windows, interactive flocking, custom rendered maps, real-time compositing, procedural drawing, 3D canvas rendering... this Chrome Experiment has them all. "The Wilderness Downtown" is an interactive interpretation of Arcade Fire's song "We Used To Wait" and was built entirely with the latest open web technologies, including HTML5 video, audio, and canvas.