<p>SAN FRANCISCO, California (AP) -- David Byrne, an accomplished composer, photographer and lead singer of Talking Heads, has evolved -- some would say devolved -- into an unlikely artistic medium: PowerPoint.</p>
<p>Best known for vocals in "Psycho Killer" and "Burning Down the House," Byrne originally intended to spoof the ubiquitous software as a dumbed-down form of expression between communication-addled business executives.</p>