Circular breathing is a technique used by players of some wind instruments to produce a continuous tone without interruption. This is accomplished by breathing in through the nose while simultaneously pushing air out through the mouth using air stored in the cheeks.
The technique was developed independently by several cultures, and is used for many traditional wind instruments.
In the 13th century, Asian metalsmiths who specialized in gold and silver used circular breathing techniques for crafting various decorative and ornamental items. In crafting such items, craftsmen were required to blow continuously to the flame through a pipe with a needle-like hole, in order to make the hard metal melt or soften. From such necessity, craftsmen mastered a circular-like cycle of breathing, simultaneously inhaling through their nose while blowing without any pauses. The introduction of the circular breathing technique in the art of ancient windplayers was a productive invention in its performing technique.
It is used extensively in playing the Eastern zurna, the Mongolian limbe, the Sardinian launeddas, the Egyptian arghul, the Australian didgeridoo, as well as many traditional oboes and flutes of Asia and the Middle East. A few jazz and classical wind and brass players also use some form of circular breathing.
Although many professional wind players find circular breathing highly useful, few pieces of European orchestral music composed before the 20th century actually require its use. However, the advent of circular breathing among professional wind players has allowed for the transcription of pieces originally composed for string instruments which would be unperformable on a wind instrument without the aid of circular breathing. A notable example of this phenomenon is "Moto Perpetuo", transcribed for trumpet by Rafael Méndez from the original work for violin by Paganini.
In 1997, a Guinness World Record was set for longest held musical note. Kenny G used circular breathing to sustain an E-flat on a saxophone for 45 minutes and 47 seconds. On February 2000, Vann Burchfield set a new Guinness world record for circular breathing, holding one continuous note for 47 minutes, 6 seconds, surpassing Kenny G’s record.Mark Atkins on Didgeridoo Concerto (1994) plays for over 50 minutes continuously.