RIP Dr. Irv Wagner. You played trombone for 76 years and I'm not sure there's anyone who played trombone you didn't know. The world lost a great teacher, musician, arranger, and composer today. You brought trombonists of all ages, abilities, and countries together to create beautiful music.
Doc Wagner gave me some of the best advice for playing trombone: good pedal tones will help the high range. Expand the lows to expand the highs!
Lung cancer sucks. At least it wasn't a long battle.