Mouthpiece (brass)
Two of the newest things mouthpieces can be made out of are stainless steel and titanium. They are very rare, and are only made by a few companies. Steel and titanium mouthpieces do not vibrate as much, so they make a very clear sound, require much less cleaning, and they do not need to be silver plated. However, they are much more expensive than mouthpieces that are silver or gold plated.