Red Sky A wonderful piece by Anthony Barfield that exhibits both rhythmic, groovy sections and beautiful, contemplative ones. The trombone range spans from low C (C2) to high D (D5). Note by the Composer: Red Sky is a representation of the Big Bang Theory. Science tells us the universe continues to expand from a single point. All the matter, energy, and light in the universe were compacted into an infinitely dense point. The universe then tremendously expanded. Red Sky focuses on space, matter, and energy as a whole.