That's sad. I remember guys in the band back in high school trying to play some of Ferguson's high notes. They didn't succeed too well.
I used to freak them out by grabbing a trumpet and doing lip slurs and glisses way up high on the instrument, an octave or more above their highest notes. They couldn't figure out how I could do that, since I didn't even play the trumpet.
I never told them that oboist's embouchures are really strong. It was easy. But I never could get the hang of playing an instrument with only three valves.
What drives the pitch of a trumpet? Is it the blowers lips? Its clearly not fixed by the fingering...