Awesome! This is fun, helping one another move forward.

If Bill is a dummy, then I am and Greg is, etc., etc. And, there would be no WindWorks or many of the books, teachers, websites, videos on YouTube, etc., etc.

I know I’m not spoiling anything by answering Greg’s question in my own way, as we all have to get there ourselves…hopefully my answer helps others…as that’s what this is all about…

What is MmmmmAaahhhhOooohhhh about?

Mmmmm – Gets our lips together

Aaahhh – Separates our lips slightly, creating the aperture and opens the throat

Ooohhh – Tightens the aperture inward from the corners towards the aperture/mouthpiece center/air columnn, we can feel the aperture corners engage at this point–for me, the Ooohh is the key and I play around, expirimenting with Ooohh to tighten the aperture corners as I ascend in harmonic slurs to get the sensation of engaging the aperture corners and tightening the lips towards the center of mouthpiece/air column/aperture as I arch my tongue

That’s my take, FWIW…might not be 100% right but has given me progress thus far…

Hope it helps.