Even though I played clarinet, most of my friends were in the percussion section, and that's who I tended to hang out with. At a game against Trotwood-Madison, one of the more black suburbans of Dayton. Anyway, there percussion came over for a drum off, and were actually pretty impressive. Being the white kids from suburbia, our percussion section had no response for that style. Slightly humiliating, but it does lend some credence to the portrayal of drumlines in the movie.
There is a deleted scene that really is reminiscent of my band days, with one band doing Land of 1,000 Dances, which was one of our staples. The director's commentary talks about how the scene was shot with a white band to make the film more approachable to white audiences. He talks about how much they stand out, and not in a good way, and why the scene was cut.
Anyway, fun flick to reminisce with, even if I never did DCI or anything behind high school marching band . . .