The Yamaha MPCL 6C Clarinet mouthpiece is perfect for advanced players looking for further depth and control to their music. Large tip openings allow for more volume and more flexibility for experienced players, but they are harder to control and to play in tune, and they require lots of air and strength. Because they demand softer reeds, younger players wouldn't have the opportunity to build up gradually, demonstrating as to why the 6C mouthpiece is aimed at advanced players.