Re: Jazzin' Up Your Sounds!!
If you change your airstream that significantly, to create vibrato, it will effect much more than intonation. I used to use air stream, but when I started taking lessons from a professor, she singled that out as one of the first things we had to correct. That was a little over 2 years ago, and I find jaw vibrato the way to go if you want consistancy and a direct, consistant air flow (equals=good tone).