Like the laser harp show ?<p><a href="http://www.youtube.com/watch?v=8Tfoto7sokk" rel="nofollow">http://www.youtube.com/watch?v=8Tfoto7sokk</a>
concert given in 1990
The lasers where going up to the Arc de triomphe (actually relayed from the top of the harp for security reasons I suppose)