Harry Bertoia has been an important Italian-born American designer, famous for the variety of its creations including interior design, sculpture and jewelry-making. His work, strongly influenced by the observation of nature and of his home country, is pervaded with engraving art in all its stages. The other focus was on the abilities of metals in relationship with the spaces, the movement and the sound. Bertoia in fact designed a system of sonorous sculptures, based on the vibration of metal bars in different thicknesses. During the 50ies, with the spread of the “contemporary” style, a particular system of chairs appeared. They were characterized by a combination of sturdiness and lightness, thanks to the iron rod frame.