QUOTE(des @ Oct 23 2008, 07:00 PM)

I've recently taken on a new pupil, a near-beginner. She plays flute to a reasonable standard. The thing is, when she plays the oboe she gets really dizzy - I've tried correcting her breathing and posture (which were awful) and that helps a bit, but she still has to sit down after a short piece. She only gets this problem when playing, she can hold her breath for far longer than she can play. I've never encountered this before, any advice?? I worry it's going to put her off the oboe, which she really wants to learn..
Although you said you have corrected her breathing, I am fairly sure that the dizziness is due to NOT breathing OUT.
When I started the oboe (having played a lot of recorder and a little bit of flute) I found oboe breathing totally unnatural. Your body is telling you that you need more oxygen so instinctivly you try to breathe in, only your lungs are still full of air and this is what makes you feel dizzy.
What helped me at the beginning were:
1) two different symbols for breathing on my music: a cross meant breathe out a tick meant breathe in.
2) Playing scales with a metronome with a breath out on one beat and then a breath in on another (eg. C,D,E,F, out, in, G,A,B,C, out, in etc.)
3) Breathing out before I breathed in even at the beginning of a piece.
My teacher also insisted that I breathe out audibly and would stop me straight away if he didn't hear me breathing out (I did find this quite frustrating at times as he would be stopping me every couple of bars but it did stop the dizziness and I eventually got into the habit of breathing out without him having to remind me).
Although I no longer get dizzy, when playing in a stressful situation I still have a tendancy not to breathe out and to try to economise my air at the end of phrases when of course what I should be doing is to get rid of as much air as possible.