Function

• The mouthpiece works as a resonator where the vibrations from the lips join with the air inside the instrument to create the desired sound.
  
  

Identification

• A trumpet mouthpiece is a cylindrical piece of metal with a round piece at one end against which the trumpeter can place his lips. The metal piece has a hole through which the musician can blow air.
  
  

Types

• Many varieties of trumpet mouthpieces are available, each designed to fit the musician's embouchure, or his positioning of the lips, and style of playing.
  
  

Features

• Most mouthpieces are made of silver plating. A more expensive variety is gold plated, but the use of these can be cost prohibitive.
  
  

Warning

• According to the TrumpetStudio.com, most amateur musicians use an incorrect mouthpiece and should consult with a music professional before buying one.