‘Tis the season of high school and collegiate football matches. (Indeed, my loyalties will be tested sorely this weekend as the Nittany Lions of Penn State venture to chilly Minneapolis to take on the Golden Gophers of the University of Minnesota.) And along with the contest on the gridiron is another festivity not to be missed: the half-time show countless marching bands put on each Saturday afternoon. The Unionville-Chadds Ford School where my children now attend has an awesome marching band, and it’s been fun throughout the late summer and fall to hear them practice from outside our home just a mile away and to see them whenever...