Each group of four instruments combines with a keyboard: four woodwinds are matched with a piano, four brass with a marimba, and four strings with a synthesizer. The texture is simple- melody and accompaniment. After a melody is introduced, it is then harmonized into four note chords. The chords become an accompaniment for a new melody, which in turn is harmonized to work with the accompaniment. The old chords drop out making the new chords become the new accompaniment for yet another new melody.
The keyboard instruments, around which each family of four instruments is grouped, simply double exactly what is being played; the piano, marimba, and synthesizer add no new material. Instead, they provide an extra envelope to the four-note chords as well as reinforce the attacks.
The music falls into the kind of four-bar phrases found in most popular music. Overall, the structure of the piece is arranged in four identifiable sections.