You’re welcome, Colin.

I’ve noticed too that obtaining a pitch with a breath attack or slur is different than articulating it.

I havent come up with a concise explanation, but WindWorks covers this better / more concisely than any method ive seen. And I’ve seen most methods, I believe.

Patience, experimentation while avoiding kicking with the air seem to be the key for me.

I typically do some articulation scales while warming up and try to keep things light above the staff, back off the air slightly.

And WindWorks has great exercises transitioning from Passive to Active air using every different articulation–very useful.

I was experimenting with Active Air today; it was fun, I got some very high notes relatively easily. Amazing what’s possible if we don’t tense up / choke off amd get in our own way.