Extended technique is a term used in music to describe unconventional, unorthodox or "improper" s of singing, or of playing musical instruments.Although the use of extended technique was uncommon in the common practice period (c. 1600 - 1900), extended techniques are more common in modern classical music since about 1900. Extended techniques have also flourished in popular musics, which are typically less constrained by notions of "proper" technique than are traditional orchestral music. It should be noted that nearly all jazz performers make significant use of extended techniques of one sort or another, particularly in more recent styles like free jazz or avant-garde jazz. Musicians in free improvisation have also made heavy use of extended techniques.
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