Never realized Elton played Trombone…😏
No, it is good to see that. Vizzuti had a video and demonstrated the same, and Lynn Nicholson showed in a video of his that we blow air into the mouthpiece, we dont buzz actively.
But I think buzzing early might encourage too tight of an aperture,which is probably what eckleberg experienced.
Buzzing the MP is probably helpful for advanced players working on the upper register.