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For StadTraum, in Salzburg 1991 O+A had set themselves the
task of making lots of high frequencies from over the heads of
the crowd in the Residenz Platz. The solution was in conjunction
with the Autochem engineers, create these lighter than air
tweeter balloons with the aplication of pizoelectric film drivers.
Above 1K hz the sound quality and pressure level is alarming.
24 of these were installed on a triangular pattern floating on
three strings. Wind shifts caused the beams to sweep the crowd.
We lost 5 in a thunderstorm and they were later tracked on
Checoslovakian air radar after having flown across the border.

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OBJECTS
Odland+Auinger