Portnoy Bb Clarinet Mouthpiece BP03 Long considered a standard for American clarinetists, the Portnoy Bb clarinet mouthpiece produce a wonderfully focused tone and yet is very free blowing Great for the symphony or chamber hall, the Portnoy clarinet mouthpiece has been the most recommended step-up mouthpiece since its release Long considered a standard for American clarinetists, the Portnoy Bb clarinet mouthpiece produce a wonderfully focused tone and yet is very free blowing Great for the symphony or chamber hall, the Portnoy clarinet mouthpiece has been the most recommended step-up mouthpiece since its release Style distinctions between BP01, BP02, and BP03 versions The facing affects the length of the opening, width and slope of the opening