How very cool, congratulations.
Brings back the memories, my daughter was in marching band (15 years ago). Probably the best experience of her high school years, a lot of good life lessons learned there. They all went to Taiwan for one trip then Ireland a couple of years later, raised all the funds themselves. She's still good friends with a lot of the band members... eventually married one of them.
Too bad the marching band program was cut.
Best wishes to you and all the kids.