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Yamaha 11C4 mouthpiece is a precise, easy playing and reliable way to compliment your cornet's sound. The 11C4 mouthpiece combines a medium sized rim diameter with a standard sized cup depth to achieve great playability. The medium size means the 11C4 is an extremely versatile mouthpiece and can allow your cornet to play a wider variety of tones. An ideal choice for students wanting to extend their range, without distancing themselves from familiarity.