Designed for the elite musician searching for a professional, signature sound. The state-of-the art design and manufacturing allows the player to achieve a fatter, darker tone for maximum projection to cut through a horn section or amplified instruments. With this mouthpiece you can play louder than a traditional rubber or metal mouthpiece, without sacrificing tone quality or tuning. Access to the 4th octave has never been easier, as the Apollo offers even the beginning musician access to the world of Altissimo. Both the Brass and Aluminum are perfect for the professional musician who will experience changing climates, altitudes, and humidity, but can also withstand the wear and tear of travelling months on end. The metal series is a must have for all beginner and professional saxophonists alike.