It’s perhaps the most widely used because of its ability to complement a host of musical styles, the French Horn straight mute allows for a free-blowing sound in all registers, providing a consistent flow quality that allows musicians to achieve a delicate, controlled sound without transposing registers. The Jo-Ral FR-AC Copper Bottom French Horn Straight Mute is made of spun aluminum, and has been tested to perform evenly in all registers. Finished with a copper bottom, producing a powerfully dark and rich sound. Jo-Ral mutes also feature neoprene-enhanced composite cork pads that provide extra durability. The result is a more pliable cork that grips well and doesn’t dry out, become brittle or break off—so it lasts longer while easily accommodating fine adjustments for a perfect fit.