Yamaha has prepared an array of top-quality woodwind mouthpieces to meet the musical requirements of players at every level of proficiency in every genre. Yamaha mouthpieces are made of plastic or hard rubber. Both are designed to produce a well-balanced tone with all the flexibility the player requires.Tip openings Tip openings range from 3C (the smallest) to 7C (the largest), giving the player different options and playing characteristics to choose from. Wider tip openings provided consistent intonation and easy response, generating a good, clear tone. Narrow tip openings help the player achieve a more focused sound with greater volume and projection while providing a richer tone quality and easier vibrato.Face length Yamaha mouthpieces also feature different facing lengths. Longer facings create a robust sound while being very flexible and easily controlled.