QUOTE(Lucid @ Nov 2 2009, 05:27 PM)

Ever since I've started the flute I've had an issue with playing the higher notes because of the adjustment you need to make to your embouchure. I thought I'd improved as I read somewhere that you should tighten the corners of your mouth to get the higher notes, and this seemed to work. However I'm now feeling a little disappointed as my teacher pointed out that my embouchure was too smiley and that I was still overblowing for the higher notes, so I haven't changed anything for the better regarding my embouchure.
Don't think of embouchure in terms of 'tightening' anything because these leads to tension, and often encourages a smiley embouchure. You need to focus the muscles rather than actively trying to tighten them. I was originally taught a smiley embouchure (by a school flute teacher who also taught clari, oboe and bassoon) which has been very difficult to get rid of, and it still creeps back in if I'm stressed, tired or frustrated.
QUOTE(Lucid @ Nov 2 2009, 05:27 PM)

I think another problem I have is that the aperture is too wide. So I've been told that I need to push forward with my jaw more and cover more of the hole with my lower lip for the higher notes. This is something I find really difficult as it requires you to be very flexible with your embouchure.
For the top octave you need a narrower, taller embouchure. The edges of your lips should be together but not tight. Try thinking of it looking more like the tall thin number 0 on the computer keyboard rather than the round letter O. Your jaw controls the direction of the airstream, which needs to be higher for the top octave.
QUOTE(Lucid @ Nov 2 2009, 05:27 PM)

I was just wondering if anyone has any useful tips of how to practise the flexibility. Slurred octaves is the obvious exercise and I imagine the most beneficial, but I just wondered if there's any other ways or any good pieces that cover this? I've got the Trevor Wye books but would probably prefer finding actual pieces of music that I could work on to improve this.
The harmonics exercises Alicia mentions are very good. I also practice jumps up and down the scale keeping one of the notes the same and changing the other. Sometimes I will keep the top note the same (e.g. if I'm wanting to do intensive work on top F#) e.g. I'll play the top note and then go down the scale (generally two octaves to get the really big jumps in) returning to the top note in between each of the notes of the scale. Other times I do the reverse and keep the bottom note the same and gradually get further and further away from it with the top note.
QUOTE(Lucid @ Nov 2 2009, 05:27 PM)

Also if anyone has tips for forming the correct embouchure shape that'd be good too. For example on the saxophone the shape is similar to when you say 'oooh'.
I personally would avoid thinking of embouchure in terms of sounds. Partly because your embouchure does need to change a lot for different notes, and partly because a lot of people seem to associate different sounds e.g. aaw, eee and ooo with different moods or tone colours (or at least this is how I've been taught...others may disagree)
QUOTE(Lucid @ Nov 2 2009, 05:27 PM)

In the long term is it really a case that flautists are constantly changing their embouchure position for each register? I know they are required to be very flexible with their embouchure but when I've seen people play I've never noticed them moving their jaw loads etc.
You need to constantly change for each note rather than each octave/register. It's not a case of suddenly changing your jaw position and embouchure when you go from one octave to the next (like suddenly adding a register key), this needs to be done gradually as you go up/down each octave. The exact embouchure for each note will also change depending on things like dynamics and tuning, and will change between individual players and flutes. When I changed flutes last year some of the notes were in a completely different place embouchure-wise compared to my old flute, and I still occasionally slip back into the 'old' positions.