You’ll notice when you watch great players, you hardly see anything moving in the face; all of the important action happens inside the mouthpiece rim and cup!
Most people do not understand this and use all of the muscles, outside the rim, trying to fix the issues inside the rim, this doesn’t work too well!
The Cycle of T.E.E’s primarily focusses on the outside of the rim and must be mastered before we head inside the rim with the Singing C Series and the Four Factories technical development series.
Better playing comes from better technique whether you are a sportsperson or musician. Cutting corners ends up taking you longer!