Sounds good, Steve. I think some more structure would do us both good–I need to do it too. I understand what you mean about buzzing feeling good, but I think there’s a high chance that buzzing before the whole aperture corner engagement thing “clicks” for you is risky as you may be reinforcing the wrong thing(s) when you buzz your lips / mouthpiece.

My $.02 would be to limit that, perhaps just do the blow through the mouthpiece and buzz the leadpipe a bit like in Largo–I would follow the course mostly, followed with some limited personal experimentation focused on one aspect (i.e. aperture corner engagement / harmonic slurs / octaves with breath control).

And I would play some music and try to focus on making the best, most resonant, most open sound throughout your whole range–I think doing that helps guide us in the right direction, whereas we might manipulate to achieve a certain pitch in a way that adversely impacts the sound, etc.

I’ve found that focusing on my sound has helped me get back on track when I’ve strayed away from the fundamentals, FWIW.