Arnolds & Sons Methodic Practice Adapter Trb
Arnolds & Sons Methodical Practice Adapter Trombone, Methodical Practice Adapter for Trombone (narrow shank), Corrects the pressure on the lips, Pressure is steplessly variable and is dependent on the skill of the player, When too much pressure is exerted on the lips, the air can escape via the provided openings, With frequent use, the so called ""non-pressure"" embouchure can be achieved