Wmutes Concert Mute - CelloWmutes Concert Mute is engineered to deliver a rich, high quality muted tone elevating the standard concert muting experience. While the degree of sound reduction is comparable to a traditional mute, the precision design and carefully selected materials produce a noticeably warmer, more stable, and focused sound. A choice of matte or bright finish lets you match the mute to your personal aesthetic. A delicate velvet lining ensures a smooth, secure fit