This ritual wind instrument is similar to an elementary rustic clarinet, with no holes to cover, is familiar to the Erque (which has a bamboo extension of about 3 meters). Some investigations and studies did not determine its origin but can be attributed to the pre-Columbian archaeological era, although nothing is possible to be sure about it.
It emphasizes the horn of the cow that constitutes the main aspect of the acoustic pavilion of the instrument as well as the vibrating tongue (piece of bamboo, of approximately 10 centimeters and 10 millimeters of diameter, obtained by means of a longitudinal incision), inserted in the final part Of the horn.
The music provided by the erquencho is like a moan of an animal, singular and impressive sound, sometimes accompanied by rhythmic drumming.
The Erquencho can be found in the Andean region, in Aboriginal cultures of central and northern Argentina and also in Bolivia, Chile and Peru. It is used for rituals and various celebrations, it is considered a summer instrument.