I've got a strange question to pose and wondered if anyone has experienced this before.
I am a returning trombonist and have played for years previously.
I always start my practice sessions with half an hour of long notes. When the slide is in closed position and I am holding an F in the stave or say a Bb above the stave, I can hear the rhythmic beat of my pulse in the note. I have even recorded it to see if it's only me that can hear it or if it is noticeable. It can be heard on play back. Can anyone offer a solution, I'd be really grateful.