Manny- I've been experienceing alot of muscle pain in my mid-left back recently. I think it may be associated with playing, because on days I don't get to put much time in, it is less. It was particularly noticable after rehearsals with the wind ensemble and after the pit orch rehearsal last night (bending to get mutes was quite painful). I am worried that I may be developing some bad posture habit without knowing it. I have been trying to be more conscious of posture and weight (of the horn) distribution. Being near the middle of nowhere, there aren't any Alexander teachers that I know of to consult. I've never had this problem before. I am also trying the "puppet" excercises, but today was a fairly busy lesson day, so I didn't get to practice as much. Any suggestions?