The first section, "The Dream", is a mellotron-driven ballad, but after two and a half minutes it changes to a completely free-form instrumental improvisation by the band (called "The Illusion"), which lasts until the end of the song. Robert Fripp plays a snippet of "The Surrey With the Fringe on Top" (from Rodgers & Hammerstein's "Oklahoma!")
The opening part, "The Dream", is an atmospheric ballad featuring a mellotron, but it evolves into an unstructured instrumental exploration by the band ("The Illusion") that spans the remainder of the track. Robert Fripp incorporates a brief excerpt from "The Surrey With the Fringe on Top" (from Rodgers & Hammerstein's "Oklahoma!")