From Vandoren, the company that has defined the clarinet sound for over a century, comes a revolutionary new design in clarinet mouthpieces. Introducing the all new Masters mouthpiece for Bb clarinet! Available in two models, the CL4 and CL5, the new Masters series combines a completely new chamber design with a tip opening and facing combination designed for easy playability across a wide range of reed strengths, resulting in a sound that is unbelievably gorgeous. Free Black M/O Ligature. Crisp and bright tone appreciated by beginners and pros alike. Comfort while playing. .