"Linear Visions" portrays the concrete process of iron-making at the Voestalpine factory in Linz. The images of heated iron and colorfully glistening steel sheet wrapped in sprays of cooling water and rising steam, combined with impact noises and characteristic sounds detected by vibration sensors, create what may be perceived like an abstract kind of scenery.
Fontana refers to his acoustic works as "sound sculptures." Since the 1970s, he has been realizing these in projects using channels such as speakers at art museums or radio broadcast, evoking meanings and memories in the audience as they listen to various sonic elements from two geographically distant cities at the same time.