Quartet
From Free net encyclopedia
For Sega's arcade game, see Quartet.
A quartet is a group of four identical or similar objects, or a grouping of four persons for a common purpose.
Music
In music, a quartet is a method of instrumentation (or a medium), used to perform a musical composition, and consisting of four parts. The most popular instrumentation is the string quartet.
Quartet also refers to a musical composition written for such a group.
A string quartet is a form of instrumentation, in Western music tradition, that consists of two violins, a viola, and a cello playing a multi-movement musical composition utilizing the sonata form. Another common instrumentation is the piano quartet, consisting of violin, viola, cello, and piano. The 'quartet' is a type of chamber music, which began in the 18th century when public concert-giving began, and has continued to the present day. It is considered the most important form in chamber music. One of the first contributors, Luigi Boccherini, wrote 100 string quartets. Other important contributors have been Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven.
The particular choice and number of instruments derives from the registers of the human voice: soprano, alto, tenor and bass. In the string quartet, two violins play the soprano and alto vocal registers, the viola plays the tenor register and the cello plays the bass register. In opera, a quartet refers to the use of four voices.
Many believe the four instrument arrangement to be one of the most difficult for which to compose, compared with a trio or quintet, for instance. It is suggested that the difficulty arises from the complex interplay of four distinct voices performing under large temporal and tonal constrasts. Many performers find it one of the most enjoyable of performance arrangements, allowing each player to perform their own distinct part, rarely playing a "background" or "blending" part, which is important only in connection to the larger whole.
Later, in musical styles outside of the classical forms, many artists have used the four part instrumentation such as in jazz saxophone quartets, guitar quartets, horn quartets, and barbershop quartets. The quartet form is constantly maturing and being experimented with, and is still in popular use.
Others
Four humans sharing the same gestational period are called quadruplets and are usually all born within a short period of time.
In Middle East politics, the Quartet on the Middle East is a group of four entities negotiating peace between Israel and the Palestinians. Their delegates include the U.S. Secretary of State, UN Secretary General, Russian Foreign Minister, and a representative of the European Union.
In China, the quartet who supported Mao Zedong is called the Gang of Four.