Web browser targetting voice I/O.
Rhapsode will read a webpage outloud to you according to some special CSS properties. Arrow key navigation will be supported for navigation between headings, paragraphs, and table cells.
Links (defined generally enough to include <audio>, etc) will be indicated via a special beep for the user to repeat one back (via microphone or keyboard) at any time in order to navigate between pages. Rhapsode will start reading from the <main> element if present.
Forms will be rendered as ordinary elements and be navigated to as a link. Once navigated to you will be prompted to fill each input of the form in turn before reviewing/correcting your submission before sending it.
Because I want The Web to be "universal", for browsers to have the slack they need to present it however best suits their users and the devices they use. Rhapsode demonstrates HTML/CSS's capabilities this way.