Vandoren Optimum Soprano Saxophone MouthpieceThe favorite of classical saxophonists. The conception of this series was the fruit of research on both external shape (particularly the beak) and sound, in order to meet the needs of todays saxo phone players. This series is available for: soprano saxophone SL3: Very easy blowing, particularly versatile, meets all needs. soprano saxophone SL4: A little more open than the SL3, this mouthpiece rapidly became a standard with saxophonists. soprano