Original equipment mouthpiece for Yamaha student saxophones. Yamaha 5C Standard Bari Saxophone Mouthpiece Yamaha's standard series mouthpieces offer consistent high quality and excellent value for the price! Made out of high-quality phenol resin (plastic) and feature a design based upon the top grade Custom Series, Yamaha's standard 5C baritone sax mouthpieces are extremely consistent in specifications and playing quality, an excellent value for their price. The facing of this series is slightly shorter than that of the Custom Series making them easier to play, and easier for beginning students to achieve a rich characteristic saxophone sound.