Not all mutes are created equal. The Alpine "Shield" Mute has a brass coin in the core to more effectively dampen the sound of the instrument without sacrificing tone. This mute slides on easily to all violins and violas, and gives a rich and dark muted quality when in use. When disengaged, you simply angle the mute on the strings so that it does not rattle around while you are playing. Will this sound great on your instrument? Yes, yes it will.