I am a senior in high school, and I currently play lead in a big band. My range is pretty good, working on getting a solid double C (yes, the one that is two above the staff) but it's not quite there yet. I can hit it from time to time, depending on the day, but I would say the G below it is pretty consistant, so I'm not too far off. Anyway, I think my problem is that I do not use enough air speed, or maybe just enough air in general. So I have been working on the Breathing Gym things, but I don't really like those, and I'm not feeling much in the way of results. I just had All-State Honor Band this weekend, and there was something that our guest conductor had us do that I really liked. Basically, we started with breathing in for 4, then out for 4, then in for 3, out for 3, etc. until we were down to 1. Then we did in 1, out 1, in 1, out 1. (All of this was at a slow tempo, about 60bpm and continuous, no breaks) After doing that excersise at home for a few days, I really feel like I at least start out using better air, but I eventually go back to my old air habits, haha. I was wondering if there were any other excercises that you guys knew about that I could do at home without my horn, or maybe even at work or school?