[TPIN] what is the purpose of lip slur exercises

[Dean Betts]

> With all due respect to the people who feel it is correct, I find that
> changing the vowel sound in my mouth has NO effect on pitch (other than
> maybe making it a little sharper) - the thing it does is change my tonal
> color - and that quality of sound is not where I want my playing going.
> The question that has always plagued me about tongue level; what do you
> do after EEE if you need to slur up again?

EEE AAA EEE AAA EEE AAA

EEE raises my tongue to the roof of my mouth.
AAA drops it away.

Fast lip slurs yield lip trills,

This is one way of doing them.

I agree, change in tonal color when doing lip trills might not be desirable.