Is that Louis Armstrong? He has proper cheek technique.
When I learned trombone, I was taught never to puff out your cheeks.
But I always saw Dizzy Gillespie with his massively puffed out cheeks and wondered, he gets away with it, why can’t I? 😉
Merry Christmas and Happy New Year, Sir G.
AfroTraditionalist 
Is that Louis Armstrong? He has proper cheek technique.
When I learned trombone, I was taught never to puff out your cheeks.
But I always saw Dizzy Gillespie with his massively puffed out cheeks and wondered, he gets away with it, why can’t I? 😉
Merry Christmas and Happy New Year, Sir G.
Learn the rules in order to discard them good Sir! Sorry for the delay. Happy belated Christmas and New Years!
Cheers! 🙂