Equator Loops is based on a simple melodic idea that expands and contracts step-wise in a "mirror image" of itself around the note D in the very centre of the piano keyboard. Development is strictly organic - this single idea is used exclusively throughout the piece - and progresses in "waves" of fluctuating intensity. The composer's decision to limit himself to such minimal germinal material lends the piece a hypnotic, even obsessive, feeling; interest is focused on the development of a demisemiquaver rhythmic motive and gradual expansion of the music into wider registers.