Bob Reeves has been crafting quality mouthpieces since 1968 and offers a selection of cornet mouthpieces to please any player. Comes with your choice of the following cup depths: S cup:ÿÿÿÿ Good for 1st cornet in concert band M cup: Darker tone than "S" cup. Good for the player that "bottoms out" on shallow cups C cup: Good for general, all around cornet playing B cup: Very dark, characteristic, cornet sound