French Horn Berp Berp is a brasswind practice device developed by Mario Guaneri to strengthen embrochure, improve relative pitch and add resonance and range. The Berp clamps firmly onto the open end of the receiver, with the mouthpiece removed. The clamp is designed to tighten around a round, hex or convex shaped opening. On some receivers which have an oversize ring at the opening it may be necessary to push the clamp past that before tightening down. Most people prefer the ultimate berp to be lined up parallel to the receiver at the "three o'clock" position. You may experiment with it in other positions to determine what is best for you. Once the Berp is firmly attached, you can then alternate easily between buzzing and playing your instrument by switching the mouthpiece. Beginners usually have a better chance of getting a good buzz with slightly more resistance. Once a good buzz is achieved, resistance on the Berp should then be dialed similar to that on the instrument.