Well, it is almost the Forth of July and it is time to break out the old fireworks. For some this means going to a fireworks show with a local orchestra to play while the explosives go off in time with the music, or at least relatively close to it. Well, here's the new idea: Create sound wave chambers for the fireworks such that they produce their own notes. Then time the launches and explosives to create music in the sky. The sound would be produce similar to how a pipe organ works, only using the explosive forces of the firework to produce the expanding air. The rocket tube could serve as the resonating chamber for the explosive and produce and in air note. Now string together a bunch of these and you can play perfectly synchronized music/light show, all with crazy explosives and physics. Anyway the test plan is to get some PVC pipes of varying length and throw fire crackers into them. I know it's a small test, but I am not exactly a pyrothechnitian, but I pretend I