Hey ken I have been singing/trying to sing for a few years, and I think I have a pretty good understanding of it, though a lot of the things I want to sing I feel may be out of my range (What I would like to sing.) http://www.youtube.com/watch?v=z1kp3_QxUtk
, I sing from c4-c6 in my band and I'm afraid i might be doing it wrong, so far i haven't had too many issues, other than when i hit c6# its more of a airy scream. My main problem I think is lack of power in the higher registers.
I didn't hear a C#6 (that's way up in the rafters) but I did hear you high C#5.
A couple of things:
On your recording, you have some decent open throat already working for you which is cool.
You can hear you "inch" between vowel sounds and you close down too hard on your consonants which reflect your inability to get those notes clean and in pitch
in you live demo.
In addition to strength building with the course, it would be wise to pull back and not compress so hard first, sing through the songs without any consonants at all if possible, gradually integrate bringing back in the consonants and then learn to compress little by little.
Otherwise you can and probably will hurt your voice over time.
I'm intrigued how you hit the high notes and still scream!