let's see -- WHERE should I NOT EVEN BEGIN to answer --
hey, all I know is I have two books by a fairly decent trumpet player, explaining how to play higher notes, and playing in general ---I've also got his latest CD ---- Keith Fiala can play very well --- so let me quote something from one of his books (Keith played with Maynard also)
"Keith Fiala said... The only thing that will truly help range is practicing the proper playing technique and utilizing faster air with your abs - not your lips."
FASTER AIR --- someone please WRITE to Keith or call him up, and tell him he's wrong --