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The flute is a family of classical music instrument in the woodwind group. Like all woodwinds, flutes are aerophones, meaning they make sound by vibrating a column of air. However, unlike woodwind instruments with reeds, a flute is a reedless wind instrument that produces its sound from the flow of air across an opening. According to the instrument classification of Hornbostel–Sachs, flutes are categorized as edge-blown aerophones. A musician who plays the flute is called a flautist or flutist.

Flutes are the earliest known identifiable musical instruments, as paleolithic examples with hand-bored holes have been found. A number of flutes dating to about 53,000 to 45,000 years ago have been found in the Swabian Jura region of present-day Germany. These flutes demonstrate that a developed musical tradition existed from the earliest period of modern human presence in Europe.. Citation on p. 248.
* While the oldest flutes currently known were found in Europe, Asia, too, has a long history with the instrument that has continued into the present day. In China, a playable bone flute was discovered, dated approximately 9000 years old. The Americas also had an ancient flute culture, with instruments found in Caral, Peru, dating back 5000 years and in Labrador dating back approximately 7500 years.

Historians have found the bamboo flute has a long history as well, especially in China and India. Flutes have been discovered in historical records and artworks starting in the Zhou dynasty. The oldest written sources reveal the Chinese were using the kuan (a reed instrument) and hsio (or xiao, an end-blown flute, often of bamboo) in the 12th–11th centuries BC, followed by the chi (or ch'ih) in the 9th century BC and the yüeh in the 8th century BC. Of these, the chi is the oldest documented cross flute or transverse flute, and was made from bamboo.

The cross flute (Sanskrit: vāṃśī) was "the outstanding wind instrument of ancient India", according to Curt Sachs. He said that religious artwork depicting "celestial music" instruments was linked to music with an "aristocratic character". The Indian bamboo cross flute, Bansuri, was sacred to Krishna, and he is depicted in Hindu art with the instrument. In India, the cross flute appeared in reliefs from the 1st century AD at Sanchi and Amaravati from the 2nd–4th centuries AD.

Although there had been flutes in Europe in prehistoric times, in more recent millennia the flute was absent from the continent until its arrival from Asia, by way of "North Africa, Hungary, and Bohemia", according to historian Alexander Buchner. The end-blown flute began to be seen in illustration in the 11th century. Transverse flutes entered Europe through Byzantium and were depicted in Greek art about 800 AD. The transverse flute had spread into Europe by way of Germany, and was known as the German flute.

Etymology and terminology

The word ''flute'' first entered the English language during the Middle English period, as ''floute'', or else ''flowte'', ''flo(y)te'',Simpson, J. A. and Weiner, E. S. C. (eds.), "flute, ''n.1''", ''Oxford English Dictionary'', second edition. 20 vols. Oxford: Clarendon Press; New York: Oxford University Press, 1989. . possibly from Old French ''flaute'' and from Old Provençal ''flaüt'', or else from Old French ''fleüte'', ''flaüte'', ''flahute'' via Middle High German ''floite'' or Dutch ''fluit''. The English verb ''flout'' has the same linguistic root, and the modern Dutch verb ''fluiten'' still shares the two meanings. Attempts to trace the word back to the Latin ''flare'' (to blow, inflate) have been pronounced "phonologically impossible" or "inadmissable". The first known use of the word ''flute'' was in the 14th century. According to the ''Oxford English Dictionary'', this was in Geoffrey Chaucer's ''The Hous of Fame'', c.1380.

Today, a musician who plays any instrument in the flute family can be called a flutist or flautist or simply a flute player. ''Flutist'' dates back to at least 1603, the earliest quotation cited by the ''Oxford English Dictionary''. ''Flautist'' was used in 1860 by Nathaniel Hawthorne in ''The Marble Faun'', after being adopted during the 18th century from Italy (''flautista'', itself from ''flauto''), like many musical terms in England since the Italian Renaissance. Other English terms, now virtually obsolete, are ''fluter'' (15th–19th centuries) and ''flutenist'' (17th and 18th centuries).

History

The oldest flute ever discovered may be a fragment of the femur of a juvenile cave bear, with two to four holes, found at Divje Babe in Slovenia and dated to about 43,000 years ago. However, this has been disputed. In 2008 another flute dated back to at least 35,000 years ago was discovered in Hohle Fels cave near Ulm, Germany. The five-holed flute has a V-shaped mouthpiece and is made from a vulture wing bone. The researchers involved in the discovery officially published their findings in the journal ''Nature'', in August 2009. The discovery was also the oldest confirmed find of any musical instrument in history, until a redating of flutes found in Geißenklösterle cave revealed them to be even older with an age of 42,000 to 43,000 years.

The flute, one of several found, was found in the Hohle Fels cavern next to the Venus of Hohle Fels and a short distance from the oldest known human carving. On announcing the discovery, scientists suggested that the "finds demonstrate the presence of a well-established musical tradition at the time when modern humans colonized Europe". Scientists have also suggested that the discovery of the flute may help to explain "the probable behavioural and cognitive gulf between" Neanderthals and early modern human.

A three-holed flute, 18.7 cm long, made from a mammoth tusk (from the Geißenklösterle cave, near Ulm, in the southern German Swabian Alb and dated to 30,000 to 37,000 years ago) was discovered in 2004, and two flutes made from swan bones excavated a decade earlier (from the same cave in Germany, dated to circa 36,000 years ago) are among the oldest known musical instruments.

A playable 9,000-year-old Gudi (literally, "bone flute") was excavated from a tomb in Jiahu along with 29 defunct twins, made from the wing bones of red-crowned cranes with five to eight holes each, in the Central Chinese province of Henan.
The earliest extant Chinese transverse flute is a ''chi'' ( 篪) flute discovered in the Tomb of Marquis Yi of Zeng at the Suizhou site, Hubei province, China. It dates from 433 BC, of the later Zhou Dynasty. It is fashioned of lacquered bamboo with closed ends and has five stops that are at the flute's side instead of the top. Chi flutes are mentioned in ''Shi Jing'', compiled and edited by Confucius, according to tradition.

The earliest written reference to a flute is from a Sumerian-language cuneiform tablet dated to c. 2600–2700 BC.
Flutes are also mentioned in a recently translated tablet of the Epic of Gilgamesh, an epic poem whose development spanned the period of approximately 2100–600 BC. Additionally, a set of cuneiform tablets knows as the "''musical texts''" provide precise tuning instructions for seven scale of a stringed instrument (assumed to be a Babylonian lyre). One of those scales is named embūbum, which is an Akkadian word for "''flute''".

The Bible, in Genesis 4:21, cites Jubal as being the "father of all those who play the ''ugab'' and the ''kinnor''". The former Hebrew term is believed by some to refer to some wind instrument, or wind instruments in general, the latter to a stringed instrument, or stringed instruments in general. As such, Jubal is regarded in the Judeo-Christian tradition as the inventor of the flute (a word used in some translations of this biblical passage).Judith Cohen, "Review of 'Music in Ancient Israel/Palestine: Archaeological, Written, and Comparative Sources', by Joachim Braun". Min-Ad: Israel Studies in Musicology Online. Vol. 3. (2004). http://www.biu.ac.il/hu/mu/min-ad04/BraunRev-2.pdf Elsewhere in the Bible, the flute is referred to as "''chalil''" (from the root word for "hollow"), in particular in 1 Samuel 10:5, 1 Kings 1:40, Isaiah 5:12 and 30:29, and Jeremiah 48:36. Archeological digs in the Holy Land have discovered flutes from both the Bronze Age (c. 4000–1200 BC) and the Iron Age (1200–586 BC), the latter era "witness ngthe creation of the Israelite kingdom and its separation into the two kingdoms of Israel and Judea."

Some early flutes were made out of tibias (shin bones). The flute has also always been an essential part of Indian culture and mythology, and the cross flute believed by several accounts to originate in India as Indian literature from 1500 BC has made vague references to the cross flute.

Acoustics

A flute produces sound when a stream of air directed across a hole in the instrument creates a vibration of air at the hole. The airstream creates a Bernoulli or siphon. This excites the air contained in the usually cylindrical resonant cavity within the flute. The flutist changes the pitch of the sound produced by opening and closing holes in the body of the instrument, thus changing the effective length of the resonator and its corresponding resonant frequency. By varying the air pressure, a flutist can also change the pitch by causing the air in the flute to resonate at a harmonic rather than the fundamental frequency without opening or closing any of the holes.

Head joint geometry appears particularly critical to acoustic performance and tone, but there is no clear consensus on a particular shape amongst manufacturers. Acoustic impedance of the embouchure hole appears the most critical parameter. Critical variables affecting this acoustic impedance include: chimney length (hole between lip-plate and head tube), chimney diameter, and radii or curvature of the ends of the chimney and any designed restriction in the "throat" of the instrument, such as that in the Japanese Nohkan Flute.

A study in which professional flutists were blindfolded could find no significant differences between flutes made from a variety of metals. In two different sets of blind listening, no flute was correctly identified in a first listening, and in a second, only the silver flute was identified. The study concluded that there was "no evidence that the wall material has any appreciable effect on the sound color or dynamic range".

Materials

* Bone
* Reed
* Wood
* Metals
* Nephrit (mineral)
* Glass
* Plastic

Types

In its most basic form, a flute is an open tube which is blown into. After focused study and training, players use controlled air-direction to create an airstream in which the air is aimed downward into the tone hole of the flute's headjoint. There are several broad classes of flutes. With most flutes, the musician blows directly across the edge of the mouthpiece, with 1/4 of their bottom lip covering the embouchure hole. However, some flutes, such as the whistle, gemshorn, flageolet, recorder, tin whistle, tonette, fujara, and ocarina have a duct that directs the air onto the edge (an arrangement that is termed a "fipple"). These are known as fipple flutes. The fipple gives the instrument a distinct timbre which is different from non-fipple flutes and makes the instrument easier to play, but takes a degree of control away from the musician.

Another division is between side-blown (or transverse) flutes, such as the Western concert flute, piccolo, fife, dizi and bansuri; and end-blown flutes, such as the ney, xiao, kaval, danso, shakuhachi, Anasazi flute and quena. The player of a side-blown flute uses a hole on the side of the tube to produce a tone, instead of blowing on an end of the tube. End-blown flutes should not be confused with fipple flutes such as the recorder, which are also played vertically but have an internal duct to direct the air flow across the edge of the tone hole.

Flutes may be open at one or both ends. The ocarina, xun, pan pipes, police whistle, and bosun's whistle are closed-ended. Open-ended flutes such as the concert flute and the recorder have more harmonics, and thus more flexibility for the player, and brighter timbres. An organ pipe may be either open or closed, depending on the sound desired.

Flutes may have any number of pipes or tubes, though one is the most common number. Flutes with multiple resonators may be played one resonator at a time (as is typical with pan pipes) or more than one at a time (as is typical with double flutes).

Flutes can be played with several different air sources. Conventional flutes are blown with the mouth, although some cultures use nose flutes. The flue pipes of organs, which are acoustically similar to duct flutes, are blown by bellows or fans.

Western transverse

Wooden one-keyed

Usually in D, wooden transverse flutes were played in European classical music mainly in the period from the early 18th century to the early 19th century. As such, the instrument is often indicated as baroque flute. Gradually marginalized by the Western concert flute in the 19th century, baroque flutes were again played from the late 20th century as part of the historically informed performance practice.

Concert

The Western concert flute, a descendant of the medieval German flute, is a transverse treble flute that is closed at the top. An ''embouchure hole'' is positioned near the top across and into which the flutist blows. The flute has circular tone holes larger than the finger holes of its baroque predecessors. The size and placement of tone holes, key mechanism, and fingering system used to produce the notes in the flute's range were evolved from 1832 to 1847 by Theobald Boehm, who helped greatly improve the instrument's dynamic range and intonation over its predecessors. With some refinements (and the rare exception of the Kingma system and other custom adapted fingering systems), Western concert flutes typically conform to Boehm's design, known as the Boehm system. Beginner's flutes are made of nickel, silver, or brass that is silver-plated, while professionals use solid silver, gold, and sometimes even platinum flutes. There are also modern wooden-bodied flutes usually with silver or gold keywork. The wood is usually African Blackwood.

The standard concert flute is pitched in C and has a range of three octaves starting from middle C or one half step lower when a B foot is attached. This means that the concert flute is one of the highest-pitched common orchestra and concert band instruments.

Concert variants

The piccolo plays an octave higher than the regular treble flute. Lower members of the flute family include the G alto and C bass flutes that are used occasionally, and are pitched a perfect fourth and an octave below the concert flute, respectively. The contra-alto, contrabass, subcontrabass, double contrabass, and hyperbass flutes are other rare forms of the flute pitched up to four octaves below middle C.

Other sizes of flutes and piccolos are used from time to time. A rarer instrument of the modern pitching system is the G treble flute. Instruments made according to an older pitch standard, used principally in wind-band music, include D piccolo, E soprano flute (Keyed a minor 3rd above the standard C flute), F alto flute, and B bass flute.

Indian

The bamboo flute is an important instrument in Indian classical music, and developed independently of the Western flute. The Hindu God Lord Krishna is traditionally considered a master of the bamboo flute. The Indian flutes are very simple compared to the Western counterparts; they are made of bamboo and are keyless.

Two main varieties of Indian flutes are currently used. The first, the Bansuri (बांसुरी), has six finger holes and one embouchure hole, and is used predominantly in the Hindustani music of Northern India. The second, the Venu or Pullanguzhal, has eight finger holes, and is played predominantly in the Carnatic music of Southern India. Presently, the eight-holed flute with cross-fingering technique is common among many Carnatic flutists. Prior to this, the South Indian flute had only seven finger holes, with the fingering standard developed by Sharaba Shastri, of the Palladam school, at the beginning of the 20th century.

The quality of the flute's sound depends somewhat on the specific bamboo used to make it, and it is generally agreed that the best bamboo grows in the Nagercoil area of South India.

In 1998 Bharata Natya Shastra Sarana Chatushtai, Avinash Balkrishna Patwardhan developed a methodology to produce perfectly tuned flutes for the ten 'thatas' currently present in Indian Classical Music.

In a regional dialect of Gujarati, a flute is also called Pavo. Some people can also play pair of flutes (Jodiyo Pavo) simultaneously.

Chinese

In China there are many varieties of dizi (笛子), or Chinese flute, with different sizes, structures (with or without a resonance membrane) and number of holes (from 6 to 11) and intonations (different keys). Most are made of bamboo, but can come in wood, jade, bone, and iron. One peculiar feature of the Chinese flute is the use of a resonance membrane mounted on one of the holes that vibrates with the air column inside the tube. This membrane is called a ''di mo'', which is usually a thin tissue paper. It gives the flute a bright sound.

Commonly seen flutes in the modern Chinese orchestra are the bangdi (梆笛), qudi (曲笛), xindi (新笛), and dadi (大笛). The bamboo flute played vertically is called the xiao (簫), which is a different category of wind instrument in China.

Korean

The Korean flute, called the daegeum, 대금, is a large bamboo transverse flute used in traditional Korean music. It has a buzzing membrane that gives it a unique timbre.

Japanese

The Japanese flute, called the fue, , encompasses a large number of musical flutes from Japan, include the end-blown shakuhachi and hotchiku, as well as the transverse gakubue, komabue, ryūteki, nōkan, shinobue, kagurabue and minteki

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