The "One Note Theory" is a concept for forming an optimal saxophone embouchure (also for clarinet!).
It is based on principles I'd learned from Hon. Dr. Joseph Allard, master teacher of many world famous saxophonists and clarinetists. Among them were;
Harry Carney, and more.
And be sure you check out the link in the description to get the absolutely free 14 page ebook on this concept. It contains plenty of exercises!