The temporary character of the structure combined with its musical performance function largely determined the construction system and form of a pavilion that rises over the roofs of the historical quarter of Kongsberg. The structure is the main venue, for three summer weeks, of a prestigious international jazz festival, and is afterwards completely dismantled and stored for the rest of the year. Given the acoustical requirements of jazz bands – where wind instruments play with the strings of contrabass strings, making amplification necessary –, the pavilion is designed as a large acoustic clamshell which simultaneously serves as a backdrop screen for projecting beams of light during concerts. With a maximum height of 20 meters and a length of 40, the structure is built with a pneumatic ring a meter in section, and tautened canvases are connected to it. These canvases are made of a special fabric of PVDF (polyvinylidene fluoride) fabrics coated with PVC (polyvinyl chloride), which makes the tent resistant to inclement weather while helping to spread light along the surface. The entire structure is held up by a skeleton of galvanized steel pieces five meters long: the perfectly-sized module for transport in standard containers.