I know that you are going to accuse me of name-dropping or some such thing, but I was in the marching band featured in the last few minutes of this film. The band was made up of musicians under the age of 14-years old. We were all from L.A. schools and had to be able to learn basic marching techniques. The best thing is, I met "Opie." Our uniforms were put in rows of lockers in a soundstage. My locker was next to "Opie's." Our uniforms had tricky buttons and his Mom asked me if I would help him with them. She was not allowed in a room in which hundreds of boys undressed. So, for four days I was his "older brother." He was a nice kid. I wonder what happened to him? To answer your question, I was a pretty good trombonist in those days.