I can still "play" all the highest pitches in (what I consider to be) my "range", but three or for of the top ones (after playing them in an etude fifteen or twenty times) are starting to sound a bit squeaky...
...so what I do to remedy that is to review some of the less-technical "Rochut" (Bordogni trombone book I) etudes (in the written octave, and yes, with the F tuba, because I haven't been playing it all that much either).
...The topic really is NOT "bloke's high range", but - rather - THIS OLD BOOK and (well...) PEGGY.
My OWN (old-old) Rochut books are the same as this one (yup: $2.75...adjusted for 2024 inflation: about $21, which is what they cost, these days).
...but mine are totally fallen apart ref: this...
entertaining outtake from a campy 1960 movie, based on a classic novel:
https://www.youtube.com/watch?time_cont ... e=emb_logo
This one (just as old as mine, but still holding together...probably was included with some trombone that I purchased to flip) belonged to someone named Peggy. It's pretty obvious that Peggy was a little bit too busy with the Christmas concert, the Christmas parade, Christmas itself, and midterm exams to prepare here December 14th private lesson...so this one was reassigned
for after New Years...but (also, I noticed) the NEXT etude was ALSO assigned. 
For you young whippersnappers - who've never seen the ORIGINAL front cover design of these books - they weren't very snazzy:
