Southwind's "Toccata and Fugue in D minor" is blistering indoors, the pure aggression of the rhythmic thrust grabbing the audience and not letting go. "Marche Slave" has never sounded more powerful. This is a show that embraces power, so it's kind of a surprise when the show evolves into the lovely strains of "Prelude," giving the audience a chance to catch its breath before the dynamism of "Espirit de Corps." The field is then filled with yellow, each a ray of light in the conceptual darkness-to-light theme of the show.Jeff Gorring, a three-year age-out who plays baritone, says this is the best summer he's ever had with the corps, with the most memories he's ever experienced.