Moin,
"Each graphical User Agent MUST display a HTML 5.0 document with a flower wallpaper background, and each User Agent with audio features MUST play "San Francisco" as a background sound when displaying a HTML 5.0 document. Nevertheless, developers of User Agents have the choice between Scott McKenzie's version and an a new one by the famous german pop star Heino. Any other versions of "San Francisco" are not compatible with HTML 5.0."
New in HTML 5.01: "Each user agent with audio features MUST play "Hotel California" when leaving a selfhtml document. For visual user agents, the following text can be used instead: "You can check out any time you like, but you can never leave".
Viele Grüße
Swen Wacker