Powerful tone and flexibility make La voz a standard among jazz musicians. Crafted with d'addario's state of the art reed-making technology for greater consistency, La voz features a well-balanced profile and stronger spine to bring a full tone to all playing styles. Powerful tone and flexibility make La voz a standard among jazz musicians. Crafted with d'addario's state of the art reed-making technology for greater consistency, La voz features a well-balanced profile and stronger spine to bring a full tone to all playing styles.