Wv>WD> ... with a safety-line ... lake a trapeze ...
 
Wv> Won't that interfere with the propellors? ;)
 
Depends on the type.
 
The inside of the concert-venue is programmed in memory and it will avoid
obstacles as well.
 
Wv>WD> BTW, I suppose you've never been at a Metallica concert ... or
Wv> Chicago ...
Wv>WD> or Queen ... never heard anyone play "that" loud.
 
Wv> There are also concerts where they play a bit more subtle music! ;)
 
We won't do cheap concerts ... ;-)
 
 \%/@rd 

--- D'Bridge 3.99