I have a weird problem and I am at a loss as to how to fix it.
I have a variety of horns I can play. They all play well for me, though they don't all sound the same.
I can play any of them for practice for a long time at a stretch... 45 minutes to 60 minutes, sometimes longer, play a little, rest a little, and so forth.
The instant I try to play any music... any music... I lose endurance. I can just barely get through a two-hour community band rehearsal, and I don't always make it all of the way through the concert.
This has been going on for a while; in fact, during my senior year of high school, I had similar problems, where I had never had them before.
So, there's obviously something I'm doing differently when I'm playing music. I'm putting in a lot of extra effort for some reason. But so far I haven't found a way to stop that.
If anyone has any ideas (yeah, get a teacher, blah blah, there's not exactly a large number of them here in Milwaukee), I'd be wanting to hear them.