I am not sure this topic exists in the archives on the trumpetmaster.com site.
In my first incarnation as a young trumpet player I was taught the lip curl method and stretched the lips to achieve higher notes. In my recent readings I see that this method is recommended by Clarke. It was effective in my youth.
In my second incarnation now as a comeback player I have been reading and studying as much as I can and have found conflicting information. I purchased Claude Gordon's book and have also read on the internet that the lips should be contracted towards the mouthpiece to control the size of the aperture. It was also explained that stretched lips creates a "thin sound" and that bunched lips creates "meat cushion" that make more tissue available for vibration. It all sounds very logical, so I have been practicing a good number of months now using this method. I find it effective too. I do not claim to have great range but I can now hit a solid high C with either method, but the pedal tones are much easier using the method of Claude Gordon.
I do have a teacher and I am progressing with my lessons and can play them using either method with slightly different sets of difficulties.
Right now, I am confused and neither feels natural anymore. I no longer have that comfortable feeling like I know what I am doing with my embouchure to produce high quality notes. What are the latest thoughts comparing the two methods and is one preferred as we learn more about how to play the trumpet properly (i.e., latest advances). Are both equal as long as I committ to one?
Thanks in advance for any thoughts on the subject.