The Yamaha MP TR 13C4 mouthpiece for trumpet is part of the Standard series and is very well-suited for ensembles and orchestras. The sound of the silver-plated model is quite dark. Standard Series Yamaha has been producing musical instruments and accessories for over a century now, and they've put all of that experience into developing a large assortment of mouthpieces for brass instruments. They've made so many, in fact, that they've been divided up into categories, so you can easily find the best one for you. Standard series mouthpieces are created with the help of modern production equipment and highly skilled workers. The result is a collection of mouthpieces that are simple and accurate to play, easy to attach and have an ideal weight.