Vandoren High Density HD Bb Clarinet MouthpieceHD ebonite is a high density ebonite of musical quality produced exclusively for Vandoren. This material is the fruit of years of Vandorens research and development. Its physical properties re enforce the natural acoustic qualities of our standard ebonite while optimizing the playing experience and players sensation. The projection is excellent The sound is fullbodied and rich throughout the entire range of the clarinet Articulation is easy and