William, it’s hard thing to teach here in a forum and I don’t think I’ve ever done a lesson vid on it.
listen to Ben Webster, I’ve never heard anyone do it better. then….
try hitting the low D with a quick run down fro middle A.
when you get to D lower your bottom lip or jaw or combination of both (here is where your experimentation comes in)
at the same time, play quieter, and in doing this you’ll need more air support
the softer we play the more air we need….sounds kinda backwards but it’s true
when you listen to Ben Webster you’ll notice sometimes that his breath will come through almost as much, and then more than his sax sound.
this takes a lot of air so you gotta really tighten up that gut!
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