Bb tenor saxophone mouthpiece - Yamaha Custom Series saxophone mouthpieces are sculpted out of choice ebonite, a high-quality hard rubber which offers a deep resonance and tonal qualities similar to those of natural wood. Every step of the production, from the initial shaping of the mouthpiece ‘blank’ to the final hand crafting of the facing, is done by Yamaha’s experienced artisans for complete control ensuring consistent high quality.