Hold on to your spit valve campers! You choose the tempo and the circus will do the rest. I had the great honor of performing this march under the direction of Merle Evens many years ago when the Ringling Bros. and Barnum & Bailey Circus came to Dallas, Texas for a week. Mr. Evens was the most famous director of the shows history. I found him to be very laidback and able to stop a story in its middle, direct twenty minutes of music and return to the story without missing a word. Meeting him was as moving to me…