It varies in individuals, but many players feel nervous before the performance. Some are thinking, “I may clam the first note,”
or “My chops are tightening and I have to play above the staff right away.”
Best Brass introduces the BB Trombone Warm-up Mute.
Warm-up reduces the sound (Approximately -30dB) and allows you to warm-up in the wings, backstage, and in the moments right before the performance.
Warm-up is small and light, so you can leave it alone in the bell while it’s in the case.
It also protects the bell from damage in transit.