, I find the "Dhrill" pretty hard to play.
Concerning the
Dhrill.
It's for me one of the hardest sound to get correctly.
I'm no expert at all, but I'll tell you how I see the thing, please tell me if I'm right or wrong.
That retroflex tongue position (cf. M*lk*y's CD) is the same used in throat singing to produce the overtone.

In Jeremy Cloake's new CD (
Balanda Yidaki Dhukarr), we hear that overtone when he's just singing the
"Dhrill" (without the didj).
As M*lk*y and Jeremy explain and show on their CDs,
Dhrill is a tongue
movement from interdental tongue position to retroflex position.

From what I understand, the
Dhrill sound is really produced in that movement, and not in the starting or ending tongue position in themselves.
I imagine that movement as an excavator's shovel (!!!).
As if the tongue was that shovel that had to bring back the air-flow into the throat, working against that air pressure and letting only a small thin amout pass through.
Or... if we see it the other way : as if the tongue was trying to pull
inside your throat the air of the outside (or of inside the didj), a bit like a dog lapping water...
And maybe that last image is the origin for the use of the verb "to pull" instead of "to play" when talking about didjing ?
I don't know if this "imagery" could fit with the
Dhrill or if it is way out ? Please tell me...
There also is still something I didn't figure out at all there (neither in throatsinging):
When retroflexing the tongue, does the tip of the tongue touch the palate or is it just close to it without touching ?
Does the air pass only through the sides of the tongue or also a little bit from above ?
(...) The tongue touches the palate in the retroflexed position.
EDIT > again, my mp3 file is truncated to the first 2 seconds if played on clik... Gotta download it for full listening... sorry.