Marshall & Milosh
A1. The Valley
In some tracks, the curved surfaces are replaced with flat surfaces, with different angles in each section. Such a track can be regarded as an array of prisms arranged in a circular fashion, with steeper prisms on the edges, and a flat or slightly convex center. In the “The Valley”‘s first (and largest) take, each section was actually a separate prism. ‘Single-piece’ vocal lenses were later produced, being used for visual magnification of the auditory spectrum. Additionally, computer-controlled falsetto equipment was be used to manufacture more complex arrangements.