So I took some time to practice breathing again. It's so important, don't neglect that.
Then I worked on my Xorekteer, trying to get higher notes. I was having trouble hitting anything above 300Hz while constricting - it would just disintegrate and flip into false if I tried. I'm slowly getting a handle on it.
All that work helped, and I am now finally able to do a REAL Sygyt, what with Xorekteer under it and all!! It's still rather quiet, except when I accidentally hit a sweet spot and it really resonates loudly. It's the key to attenuating the fundamental note, I guess.
Before I guess I was doing a sort of Western/Tuvan Hybrid, which rings loudly, but has a pronounced, clear base note without much constriction whatsoever. I somehow got attenuation by swallowing my tongue. The result was a nice, melodic whistle with good range, but a hollow, loud base - AND I was forming the melody on top of my tongue, behind my teeth. I think that's the wrong spot!?!
When I do it right, which I still need to get used to as it leaves me breathless yet, the higher notes come from just under my uvula. I can totally feel the sound vibrate the back of my tongue instead of my palate. It also lets me relax the tongue even more. I looked in the mirror, and even my face shows less strain this way. I can have a stoic expression now, rather than a "guitar face".
My Khoomei got a $#!+load better. I wanna now learn velum control. I can do wonderful sounds with this. Joy! Also nice and easy to do compared to the other methods. Dymchuktaar is no problem either since I confirmed with a stranger at work that they can hear the melody just fine. Blew them away, actually. I now do this instead of humming all the time.
Kargyraa - well here's my pet project. The first style I got down pat, albeit without Xorekteer. It's what got me going and motivated me to learn Khoomei in the first place. As I may have mentioned before

I watched a YouTube tutorial on it and tried ONCE and got it right. Probably all that Heavy Metal growling in my history preparing me for it. Now I get proper technique, hollow tube sounding, sweet, soft Kargyraa. Low and high. Droning or croaky.
This brings up a question: Holding a mid-range note and adding Xorekteer AND false folds results in a deep drone, depending on how much I clamp down, I can control how bright the rasp is, from a kitten purr to a hammer drill. Holding a higher note and clamping down more results in a bright, hard, almost brassy sound that I can do somewhat soft, but not very well. I can do it bright and croaky, though. I think the ventricular folds vibrate much faster on this one, but I could just be a layperson...
Are those different sub-styles of Kargyraa? They sound quite different. I have attempted and approximated Oidupaa's style, but that's different again from the other two. I get the best Oi by opening my sinuses and clamping harder, but not to a aquelch, and then singing high. Not much overtoning there, unless I "engage" Xorekteer as well, which cancels the nasal and brings me back to the higher style. All in all that's cool. I like it.
Vladimir is amazing. I tried to just vocalize the tune along to his CD, but I found that his songs are too high for me. I could do them if they were almost an octave lower... but then it doesn't sound like Oidupaa any more, except the nasal quality.
Then I listened to a lot of Albert Kuvezin. I believe his normal voice is close to that of the singer of the "Crash Test Dummies", only he adds Kargyraa. Or dies he? Kanzat sounds like a bass singer "eating" the MIC and rattling just the vocal chords very slowly, then attenuating the sharp "s" and "t" sounds when singing lyrics. When his tune goes higher in pitch, you can hear him clamp his throat tighter, adding vibrato and backing off from the MIC. But what do I know besides NEVER being able to go that low. Is there anyone besides Albert who can do Kanzat?
I have practiced every day for three and a half months - hardcore. I went strict on basics, although I wandered off course (being, Xorekteer, Khoomei, Kargyraa, Sygyt, etc.) by doing Kargyraa, then Khoomei and Sygyt and then concentrating on refining my Xorekteer. Nonetheless I have arrived and I feel confident I can do some demos and impress some people.
I can't wait to show off