That last thing he did with the lip down is actually pretty useful, if you can get a solid tone flattening your note then it opens up even more options. Even in a simple highschool marching band warm up going down halfsteps from F, I go from the B, lip down to Bb, while playing at a pretty full loud volume. I’ve also always wanted to feel what it’s like for valve instruments to do glissandos and scoops and stuff so I worked on embouchure scooping notes in jazz even when I could use my slide.
