Vandoren B40 Lyre Series 13 HD Clarinet MouthpieceVandoren has developed the 13 series mouthpiece specifically for American clarinetists using A440 pitch. Originally, four models have been originally developed with specific facings to this series: the M13, M13 Lyre, M15 and M30 mouthpieces. The perfect blend between a round sound and rich tone color. Easy blowing especially in the upper register. Enhanced by the acoustic qualities of HD ebonite.