Ever büree

The ever büree (Mongolian: эвэр бүрээ) is a Mongolian musical instrument, part of the clarinet family. Despite the fact that its name translates to "horn-trumpet", it has the timbre of the low range of a clarinet, or more precisely of a basset horn (an F alto clarinet with a range down to low C).

In terms of construction, it is an almost cylindrical tube made of black ebony, curved in a circular manner to allow the bell of the instrument to slip underneath the player's right arm. A mouthpiece (usually a saxophone mouthpiece) with a single reed is attached at the upper end of the tube. The keywork is made of guuli, a metal similar to brass, and shares similarities with the German Oehler system, since it has rolls to slide from one key to the next. Like all clarinets, it has a speaker key, which facilitates the production of the upper harmonics, elevating the tone by a 12th.