Has anyone ever experienced an unintentional embouchure change as they get older? I've been playing for the better part of 18 years, the last few years playing professionally. I turned 26 in November. For some reason my embouchure just doesn't feel the same as it used to. I am using the same exercises I've always used and am playing the same amount as always. At first I thought it was a problem with Air. I am loosing range (something I prided myself on). Then I realized that my embouchure looked different than it used to. I thought about a lesson I had years ago. The teacher told me to try and use more upper lip. I've been really paying attention to my embouchure lately and noticed that there are times when I use more upper lip than usual and times when I don't. Could this be a result of a sort of "natural embouchure change"?