Vandoren BD5 Clarinet Mouthpiece Thank you for viewing. I purchased this mouthpiece in August of this year, after selecting it with other professional players at a musical instrument store in Tokyo. I chose a piece that not only has good breath support, but also is less prone to the "muffled" sound that is characteristic of the BD model. It was great when I chose it, but my preferred tone has changed, so I've only used it twice and then stored it. This mouthpiece is recommended for those whose high notes tend to sound shrill.