...In Pipp's sculpture, eight pipes with a profile of an aeroplane wing (rotated along the horizontal axis) produce negative pressure when streams of blowing fire are released. Negative pressure accelerates air, causing sound vibrations. In this case sound represents entropic remains, proving that different profiles i.e. different conditions give rise to different results. Since thrust i.e. acceleration rate can be measured only with very complex detectors, the artist is exclusively oriented towards a sonic mass. It helps him detect a degree of air compression, which is a condition for finalizing the object/sculpture. This condition, this condensed materiel is neither a sound nor a frequency nor the decibels, however, it is a product, an object...