I have been playing with the whole Embouchure idea, not buzzing on the mouthpiece as I blow etc as I heard you are too tight... (why on earth do all teachers/conservatoriums say buzz on mouthpiece for?)
So anyway, here is my 'new trial'.
I am pretty much limited to the Middle C now which is a big drop from top line F/G above, but I can say or at least 'describe' the feeling.
In the sides of my jaw, where the skin creases (corner of lips) I get tired right in there, like I been chewing too much food. My lips feel great, like they are not really doing any work but all around my mouth now seems to get tired which is the opposite to how it felt before where my Lips would get all dead and mouth feels strong/relaxed as though I did no work and wondering why on earth my lips are dead when I feel fine elsewhere.
I also felt the Middle C blow extremely 'open' or easy. Too describe this... which er, heh... uhm, well basically it feels like my low C. It felt like air was rushing out of the middle of my lips and out of my stomach, as though it was just 'free' to blow which it was not before. Sometimes I feel it feels a little on the 'tight' side, so I now consciously in a very minor way, seem to release or open mouth (the center part not biting) and I feel the air rush through very easily and the sound gets 'larger', more open sounding, has more ring to it than before.
I do need to control it obviously as I do hear the sound drop as though im perhaps 'too loose'?
But anyway, general observation, am I now actually on the correct road?
Also, a know everything Brother of mine told me to practice with a tuner and play long tones. I did that, every single note is out of tune.
One note sharp, one flat, etc.
I am not sure how to determine whether its tuning slide or lips because with lips when I'm slightly sharp, I can do one of two things. Pull slide out to drop pitch or release some tension in lips to lower pitch. How is one to determine whats right/wrong?
When I played all 'locked in' I'm sharp/flat all the way. So to go slightly looser, it feels like I'm not actually locked in but it drops the pitch down where its meant to be, but then the next note needs to go not as loose and so forth, so its all over the place.
Any suggestions on this? Or does trumpet playing to a tuner not work?