 It is strongly influenced by mathematical composition as well as Hindustani classical music practice.Since the 1970s, Young and Zazeela have realized a long series of semi-permanent "Dream House" installations, which combine Young's just-intuned sine waves in elaborate, symmetrical configurations and Zazeela's quasi-calligraphic light sculptures.In July 1970 a model short-term "Dream House" was displayed to the public at Galerie Heiner Friedrich in Munich, Germany.