A clef (French French is a Romance language spoken as a first language by about 136 million people worldwide. Around 190 million people speak French as a second language, and an additional 200 million speak it as an acquired foreign language. French speaking communities are present in 57 countries and territories. Most native speakers of the language live in: clef "key") is a musical symbol Music notation or musical notation is any system which represents aurally perceived music, through the use of written symbols used to indicate the pitch Pitch represents the perceived fundamental frequency of a sound. It is one of the four major auditory attributes of sounds along with loudness, timbre and sound source location. When the actual fundamental frequency can be precisely determined through physical measurement, it may differ from the perceived pitch because of overtones, also known as of written notes Notes are the "atoms" of much Western music: discretizations of musical phenomena that facilitate performance, comprehension, and analysis.[1] Placed on one of the lines at the beginning of the staff In standard Western musical notation, the staff or stave is a set of five horizontal lines and four spaces, each of which represents a different musical pitch, or, in the case of a percussion staff, different percussion instruments. Appropriate music symbols, depending upon the intended effect, are placed on the staff according to their, it indicates the name and pitch of the notes on that line. This line serves as a reference point by which the names of the notes on any other line or space of the staff may be determined.

There are three types of clef used in modern music notation: F, C, and G. Each type of clef assigns a different reference note to the line on which it is placed.

Clef Name Note Line
treble-clef G4 encircled by the curl of the clef.
C-clef Middle C In classical music, the expression "Middle C" refers to the note "C" located exactly between the two staves of the grand staff and near the top and bottom, respectively, of the bass and soprano voices. When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the middle C note is (C4) that passes through the center of the clef.
bass-clef F3 between the two dots of the clef.

Once one of these clefs has been placed on one of the lines of the staff, the other lines and spaces can be read in relation to it.

The use of three different clefs makes it possible to write music for all instruments and voices, even though they may have very different tessituras In music, the term tessitura generally describes the most musically acceptable and comfortable range for a given singer or, less frequently, musical instrument; the range in which a given type of voice presents its best-sounding texture or timbre. This broad definition is often interpreted to refer specifically to the pitch range that most (that is, even though some sound much higher or lower than others). This would be difficult to do with only one clef, since the modern staff In standard Western musical notation, the staff or stave is a set of five horizontal lines and four spaces, each of which represents a different musical pitch, or, in the case of a percussion staff, different percussion instruments. Appropriate music symbols, depending upon the intended effect, are placed on the staff according to their has only five lines, and the number of pitches that can be represented on the staff, even with ledger lines A ledger line or leger line is musical notation to inscribe notes outside the lines and spaces of the regular musical staffs. A line slightly longer than the note is drawn parallel to the staff, above or below, spaced at the same distances as the notes within the staff, is not nearly equal to the number of notes the orchestra can produce. The use of different clefs for different instruments and voices allows each part to be written comfortably on the staff with a minimum of ledger lines. To this end, the G-clef is used for high parts, the C-clef for middle parts, and the F-clef for low parts - with the important exception of transposing parts A transposing instrument is a musical instrument for which written notes are read at a pitch different from concert pitch, which a non-transposing instrument, such as a piano, would play. On a transposing instrument, a concert C is written as a different note; the concert pitch that is played for a written C determines the key that an instrument, which are written at a different pitch than they sound, often even in a different octave.

Contents

Placement on the staff

In order to facilitate writing for different tessituras, any of the clefs may theoretically be placed on any of the lines of the staff. The further down on the staff a clef is placed, the higher the tessitura it is for; conversely, the higher up the clef, the lower the tessitura.

Since there are five lines of the staff, and three clefs, it might seem that there would be fifteen possible clefs. Six of these, however, are redundant clefs (for example, a G-clef on the third line would be exactly the same as a C-clef on the first line). That leaves nine possible distinct clefs, all of which have been used historically: the G-clef on the two bottom lines, the F-clef on the three top lines, and the C-clef on any line of the staff except the topmost, earning the name of "movable C-clef". (The C-clef on the topmost line is redundant because it is exactly equivalent to the F-clef on the third line; both options have been used.)

Each of these clefs has a different name based on the tessitura for which it is best suited.

In contemporary music literature, only four clefs are used regularly: the treble clef, the bass clef, the alto clef, and the tenor clef. Of these, the treble and bass clefs are by far the most common.

Individual clefs

Here follows a complete list of the clefs, along with a list of instruments and voice parts notated with them. Each clef is shown in its proper position on the staff, followed by its reference note.

An obelus (†) A dagger is a typographical symbol or glyph. It is also called a cross, obelos, or obelus. The term "obelus" is derived from a Greek word meaning "roasting spit", "needle", or "obelisk" after the name of a clef indicates that that clef is now obsolete.

G-clefs

Treble clef

When the G-clef is placed on the second line of the staff, it is called the treble clef. This is the most common clef used today, and the only G-clef still in use. For this reason, the terms G-clef and treble clef are often seen as synonymous. It was formerly also known as the violin clef. The treble clef was historically used to mark a treble, or pre-pubescent, voice part.

Among the instruments that use treble clef are the violin The violin is a string instrument, usually with four strings tuned in perfect fifths. It is the smallest and highest-pitched member of the violin family of string instruments, which includes the viola and cello. The double bass is often described as a member of the violin family, though its tuning and other characteristics share much with the viol, flutes The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or 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, oboe The oboe is a double reed musical instrument of the woodwind family. In English, prior to 1770, the instrument was called "hautbois", "hoboy", or "French hoboy". The spelling "oboe" was adopted into English ca. 1770 from the Italian oboè, a transliteration in that language's orthography of the 17th-century, English horn The cor anglais, or English horn, is a double-reed woodwind instrument in the oboe family, all clarinets The clarinet is a musical instrument that is a part of the woodwind family. The name derives from adding the suffix -et to the Italian word clarino (meaning a type of trumpet), as the first clarinets had a strident tone similar to that of a trumpet. The instrument has an approximately cylindrical bore, and uses a single reed. In jazz contexts, it, all saxophones The saxophone is a conical-bored transposing musical instrument that is a member of the woodwind family. Saxophones are usually made of brass and played with a single-reed mouthpiece similar to that of the clarinet. The saxophone was invented by the Belgian Adolphe Sax in 1841. He wanted to create an instrument that would both be the most powerful, horn The horn is a brass instrument consisting of about 12–13 feet of tubing wrapped into a coil with a flared bell. A musician who plays the horn is called a horn player (or less frequently, a hornist), trumpet The trumpet is the musical instrument with the highest register in the brass family. Trumpets are among the oldest musical instruments, dating back to at least 1500 BCE. They are constructed of brass tubing bent twice into an oblong shape, and are played by blowing air through closed lips, producing a "buzzing" sound which starts a, cornet The cornet is a brass instrument very similar to the trumpet, distinguished by its conical bore, compact shape, and mellower tone quality. The most common cornet is a transposing instrument in B♭. It is not related to the renaissance and early baroque cornett or cornetto, euphonium The euphonium is a conical-bore, tenor-voiced brass instrument. It derives its name from the Greek word euphonos, meaning "well-sounding" or "sweet-voiced" . The euphonium is a valved instrument; nearly all current models are piston valved, though rotary valved models do exist (and occasionally baritone The baritone horn, or simply baritone, is a member of the brass instrument family. The baritone horn is a cylindrical bore instrument like the trumpet and trombone. A baritone horn uses a large mouthpiece much like those of a trombone or euphonium. It is pitched in B♭, one octave below the B♭ trumpet. In the UK the baritone is frequently found), vibraphone The vibraphone, sometimes called the vibraharp or simply the vibes, is a musical instrument in the mallet subfamily of the percussion family, xylophone The xylophone is a musical instrument in the percussion family which probably originated independently in Africa and Asia. It consists of wooden bars of various lengths that are struck by plastic, wooden, or rubber mallets. Each bar is tuned to a specific pitch of the musical scale. The term "xylophone" can refer to Western-style concert, and guitar The guitar is a plucked string instrument, played either with fingers or a pick. The guitar consists of a body with a rigid neck to which the strings, generally six in number but sometimes more, are attached. Guitars are traditionally constructed of various woods and strung with animal gut or, more recently, with either nylon or steel strings. Treble clef is the upper staff of the grand staff In standard Western musical notation, the staff or stave is a set of five horizontal lines and four spaces, each of which represents a different musical pitch, or, in the case of a percussion staff, different percussion instruments. Appropriate music symbols, depending upon the intended effect, are placed on the staff according to their used for harp A harp is a stringed instrument which has the plane of its strings positioned perpendicular to the soundboard. It is classified as a chordophone by the Harvard Dictionary of Music and only types of harps are in that class of instruments with plucked strings. All harps have a neck, resonator, and strings. Some, known as frame harps, also have a and keyboard instruments A keyboard instrument is any musical instrument played using a musical keyboard. The most common of these is the piano. Other widely used keyboard instruments include various types of organs as well as other mechanical, electromechanical and electronic instruments. In common language, it is mostly used to refer to keyboard-style synthesizers. It is also sometimes used, along with tenor clef, for the highest notes played by bass-clef instruments such as the cello The cello is a bowed string instrument. The word derives from the Italian violoncello. A person who plays a cello is called a cellist. The cello is used as a solo instrument, in chamber music, and as a member of the string section of an orchestra. It is the second largest bowed string instrument in the modern symphony orchestra, the double bass (the old convention was to write an octave higher, unless preceded by a tenor clef), double bass The double bass, also called the string bass, upright bass, bass violin or contrabass, is the largest and lowest-pitched bowed string instrument in the modern symphony orchestra. The double bass is a standard member of the string section of the symphony orchestra and smaller string ensembles in Western classical music. In addition, it is used in, bassoon The bassoon is a woodwind instrument in the double reed family that typically plays music written in the bass and tenor registers, and occasionally higher. Appearing in its modern form in the 1800s, the bassoon figures prominently in orchestral, concert band, and chamber music literature. The bassoon is a non-transposing instrument known for its, and trombone The trombone is a musical instrument in the brass family. Like all brass instruments, sound is produced when the player’s vibrating lips cause the air column inside the instrument to vibrate. The trombone is usually characterised by a telescopic slide with which the player varies the length of the tube to change pitches, although the valve. Viola The viola is a bowed string instrument. It is the middle voice of the violin family, between the violin and the cello, which otherwise uses the alto clef, also sometimes uses treble clef, as do the soprano A soprano is a singing voice with a vocal range from approximately middle C (C4) to "high A" (A5) in choral music, or to "soprano C" (C6, two octaves above middle C) or higher in operatic music. In four part chorale style harmony, the soprano takes the highest part which usually encompasses the melody. For other styles of, mezzo-soprano A mezzo-soprano (meaning "medium" or "middle" "soprano" in Italian) is a type of classical female singing voice whose range lies between the soprano and the contralto singing voices, usually extending from the A below middle C to the A two octaves above (i.e. A3-A5 in scientific pitch notation, where middle C = C4), alto When designating instruments, "alto" frequently refers to a member of an instrumental family that has the second highest range, below that of the treble or soprano. Hence, for example, the term "alto saxophone". In other "families", such as the trombone, there is no soprano, the alto having been the highest, although, contralto Contralto is the deepest female classical singing voice, with the lowest tessitura, falling between tenor and mezzo-soprano. It typically ranges between the F below middle C to the second G above middle C (G5), although at the extremes some voices can reach the E below middle C (E3) or the second B♭ above middle C (B♭5) and tenor The tenor is a type of male singing voice and is the highest male voice within the modal register. The typical tenor voice lies between C3, the C one octave below middle C, to the A above middle C in choral music, and up to high C (C5) in solo work. The low extreme for tenors is roughly B♭2 (two B♭s below middle C). At the highest extreme, voices. The tenor voice is often written using an octave clef (see below) or double-treble clef.

French violin clef

When the G-clef is placed on the first line of the staff, it is called the French clef or French violin clef.

This clef is no longer used. Formerly, it was used by the flute and violin, especially in parts published in France in the seventeenth and eighteenth centuries. Its placement causes the note names on the staff to be identical to those of the bass staff, although the pitches are two octaves higher.

F-clefs

Bass clef

When the F-clef is placed on the fourth line, it is called the bass clef. This is the only F-clef used today, so that the terms "F-clef" and "bass clef" are often regarded as synonymous.

This clef is used for the cello The cello is a bowed string instrument. The word derives from the Italian violoncello. A person who plays a cello is called a cellist. The cello is used as a solo instrument, in chamber music, and as a member of the string section of an orchestra. It is the second largest bowed string instrument in the modern symphony orchestra, the double bass, euphonium The euphonium is a conical-bore, tenor-voiced brass instrument. It derives its name from the Greek word euphonos, meaning "well-sounding" or "sweet-voiced" . The euphonium is a valved instrument; nearly all current models are piston valved, though rotary valved models do exist, double bass The double bass, also called the string bass, upright bass, bass violin or contrabass, is the largest and lowest-pitched bowed string instrument in the modern symphony orchestra. The double bass is a standard member of the string section of the symphony orchestra and smaller string ensembles in Western classical music. In addition, it is used in, bass guitar The bass guitar is a stringed instrument played primarily with the fingers or thumb (either by plucking, slapping, popping, tapping, or thumping), or by using a plectrum, bassoon The bassoon is a woodwind instrument in the double reed family that typically plays music written in the bass and tenor registers, and occasionally higher. Appearing in its modern form in the 1800s, the bassoon figures prominently in orchestral, concert band, and chamber music literature. The bassoon is a non-transposing instrument known for its, contrabassoon The contrabassoon, also known as the double bassoon or double-bassoon, is a larger version of the bassoon, sounding an octave lower. Its technique is similar to its smaller cousin, with a few notable differences, trombone The trombone is a musical instrument in the brass family. Like all brass instruments, sound is produced when the player’s vibrating lips cause the air column inside the instrument to vibrate. The trombone is usually characterised by a telescopic slide with which the player varies the length of the tube to change pitches, although the valve, baritone The baritone horn, or simply baritone, is a member of the brass instrument family. The baritone horn is a cylindrical bore instrument like the trumpet and trombone. A baritone horn uses a large mouthpiece much like those of a trombone or euphonium. It is pitched in B♭, one octave below the B♭ trumpet. In the UK the baritone is frequently found, tuba The tuba is the largest and lowest pitched brass instrument. Sound is produced by vibrating or "buzzing" the lips into a large cupped mouthpiece. It is one of the most recent additions to the modern symphony orchestra, first appearing in the mid-19th century, when it largely replaced the ophicleide. Tuba is Latin for trumpet or horn. The, and timpani Timpani are musical instruments in the percussion family. A type of drum, they consist of a skin called a head stretched over a large bowl traditionally made of copper, and more recently, constructed of more lightweight fiberglass. They are played by striking the head with a specialized drum stick called a timpani stick or timpani mallet. Unlike. It is also used for the lowest notes of the horn The horn is a brass instrument consisting of about 12–13 feet of tubing wrapped into a coil with a flared bell. A musician who plays the horn is called a horn player (or less frequently, a hornist), and for the baritone Baritone is a type of male singing voice that lies between the bass and tenor voices. It is the most common male voice. Originally from the Greek βαρύτονος, meaning 'deep (or heavy) sounding', music for this voice is typically written in the range from the second F below middle C to the F above middle C (i.e. F2–F4) in choral music, and and bass voices. Tenor voice is notated in bass clef when the tenor and bass are written on the same staff. Bass clef is the bottom clef in the grand staff for harp and keyboard instruments. The contrabassoon, double bass and electric bass sound an octave lower than the written pitch.

Baritone clef

When the F-clef is placed on the third line, it is called the baritone clef.

This clef is no longer used. Previously, it was used to write the baritone part in vocal music.

Subbass clef

When the F-clef is placed on the fifth line, it is called the subbass clef. The use of this clef gives the same note names as the treble clef, but the actual notes are two octaves lower.

This clef is no longer used. Formerly, it was used to write low bass parts, e.g. in the works of Heinrich Schütz.

C-clefs

Alto clef

When the C-clef is placed on the third line of the staff, it is called the alto clef. As with all C-clefs, this line indicates the position of middle C.

This clef (sometimes called the viola clef) is currently used for the viola, the viola da gamba, and the alto trombone.[2] Formerly, it was used for the alto voice and for instruments playing a middle part (such as oboes, recorders). It occasionally turns up in keyboard music to the present day (Brahms's Organ chorales, John Cage's Dream for piano).

Tenor clef

When the C-clef is placed on the fourth line of the staff, it is called the tenor clef.

This clef is used for the upper ranges of the bassoon, cello, euphonium, double bass, and trombone (which all use the bass clef in their lower and middle ranges, and in their extreme high ranges, the treble clef as well). Formerly, it was used by the tenor part in vocal music but its use has been largely supplanted either with an octave version of the treble clef when written alone or the bass clef when combined on one staff with the bass part.

Baritone clef

In the past, the C-clef was occasionally placed on the fifth line and called the baritone clef, like the baritone F-clef on the third line, to which it is exactly equivalent. Because of this equivalency, it was rarely used in the past; the baritone F-clef was used instead.

Mezzo-soprano clef

When the C-clef is placed on the second line of the staff, it is called the mezzo-soprano clef.

This clef is no longer used. Formerly, it was used in vocal music to write mezzo-soprano parts.

Soprano clef

When the C-clef occurs on the first line of the staff, it is called the soprano clef.

This clef is no longer used. Formerly, it was used in vocal music to write soprano parts. The soprano trombone uses this clef too. Although this trombone is seldom used today, some works of J.S. Bach call for it.

Other clefs

Octave clefs

Three types of suboctave treble clef showing middle C

Starting in the 18th Century treble clef has been used for transposing instruments that sound an octave lower, such as the guitar; it has also been used for the tenor voice. To avoid ambiguity modified clefs are sometimes used, especially in the context of choral writing; of those shown the C clef on the third space, easily confused with the tenor clef, is the rarest.

This is most often found in tenor parts in SATB settings, in which a treble clef is written with an eight below it, indicating that the pitches sound an octave below the written value. As the true tenor clef has generally fallen into disuse in vocal writings, this "octave-dropped" treble clef is often called the tenor clef. The same clef is sometimes used for the baritone horn. In some scores, the same concept is construed by using a double clef—two G-clefs overlapping one another.

At the other end of the spectrum, treble clefs with an 8 positioned above the clef may be used in piccolo, penny whistle, soprano recorder, and other high woodwind parts and is sometimes known (informally) as the "sopranino clef".

The F clef can also be notated with an octave marker. The F clef notated an octave down is sometimes used for contrabass instruments such as the double bass and contrabassoon and, as the traditional subbass clef has fallen into disuse, that term is sometimes[citation needed] used to describe this clef. The F clef notated an octave up is used for bass recorder and sometimes, though seldom, used for countertenor parts and called the countertenor clef, as it is easy for a bass or baritone to read while singing the part in falsetto. However, both of these are extremely rare (and in fact the countertenor clef is largely intended to be humorous as with the works of P.D.Q. Bach). The unmodified bass clef is so common that performers of instruments and voice parts whose ranges lie below the staff simply learn the number of ledger lines for each note through common use, and if a line's true notes lie significantly above the bass clef the composer or publisher will often simply write the part in either the true treble clef or notated an octave down.

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