Capo
Encyclopedia
A capo is a device used on the neck of a stringed (typically fret
Fret
A fret is a raised portion on the neck of a stringed instrument, that extends generally across the full width of the neck. On most modern western instruments, frets are metal strips inserted into the fingerboard...

ted) instrument to shorten the playable length of the strings, hence raising the pitch. It is frequently used on guitar
Guitar
The guitar is a plucked string instrument, usually played with fingers or a pick. The guitar consists of a body with a rigid neck to which the strings, generally six in number, are attached. Guitars are traditionally constructed of various woods and strung with animal gut or, more recently, with...

s, mandolin
Mandolin
A mandolin is a musical instrument in the lute family . It descends from the mandore, a soprano member of the lute family. The mandolin soundboard comes in many shapes—but generally round or teardrop-shaped, sometimes with scrolls or other projections. A mandolin may have f-holes, or a single...

s, and banjo
Banjo
In the 1830s Sweeney became the first white man to play the banjo on stage. His version of the instrument replaced the gourd with a drum-like sound box and included four full-length strings alongside a short fifth-string. There is no proof, however, that Sweeney invented either innovation. This new...

s. G.B. Doni
Giovanni Battista Doni
Giovanni Battista Doni was an Italian musicologist who made an extensive study of ancient music. Known, among other works, for having changed the name of note Ut renaming it Do after his own family name to ease solfege.- Life :...

 first used the term in his Annotazioni of 1640, though capo use likely began earlier in the 17th-century.

The capo is most commonly used to raise the pitch of a fretted instrument so that a player can perform a piece in a certain key using different fingerings than they would use if played "open" (i.e. without a capo). In effect, a capo uses a fret of an instrument to create a new nut at a higher note than the instrument's actual nut. No matter the style, the capo is typically placed as close to the desired fret as possible, just behind the fret. This holds the strings down behind the fret as securely as possible with the sharpest possible angle to ensure they will remain fretted.

There are numerous styles of capos, but most commercial capos consist of a rubber-covered bar which holds down the strings of the instrument and is clamped
Clamp (tool)
A clamp is a fastening device to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure...

 to the instrument via one of a number of mechanisms. The same style of capo may be sold in different sizes and shapes for different instruments and fret-board curvatures.

The most relevant mechanical factors which vary by type of capo are their ease/method of use, their size and tendency to interfere with the player's hands, and their ability to hold down the strings uniformly without affecting the tuning of the instrument.

Capos have been used on many other stringed instruments, including relatives of the mandolin (such as the mandola
Mandola
The mandola or tenor mandola is a fretted, stringed musical instrument. It is to the mandolin what the viola is to the violin: the four double courses of strings tuned in fifths to the same pitches as the viola , a fifth lower than a mandolin...

 and Greek bouzouki
Bouzouki
The bouzouki , is a musical instrument with Greek origin in the lute family. A mainstay of modern Greek music, the front of the body is flat and is usually heavily inlaid with mother-of-pearl. The instrument is played with a plectrum and has a sharp metallic sound, reminiscent of a mandolin but...

), and four-string banjos. There is a special two-piece capo available for the square-necked Dobro
Dobro
Dobro is a registered trademark, now owned by Gibson Guitar Corporation and used for a particular design of resonator guitar.The name has a long and involved history, interwoven with that of the resonator guitar...

, or resonator guitar, which does not contact the neck, but clamps above and below the strings themselves.

Use

Arrangements often cite the proper capo position for songs which should be played with a capo just as they may cite alternate tunings when those are used by the artist. When referencing fingerings for a song that uses a capo, it must be determined whether reference will be made to the absolute finger position, or whether reference will be made to the position relative to the capo. For example, in tablature
Tablature
Tablature is a form of musical notation indicating instrument fingering rather than musical pitches....

, a note played on the fifth fret of an instrument capoed at the 2nd fret could be listed as "5" (absolute) or "3" (relative to capo). Similarly, a D-shaped chord could be referred to as "D" (based on the shape relative to the capo) or E (based on the absolute audible chord produced). Neither method strongly prevails over the other. For this reason, the phrase "chord-shape" is commonly used to clarify that the fingering shape and not the audible pitch is being referred to.

Playing with a capo creates the same musical effect as retuning all of the strings of an instrument up the same number of steps; however, unlike retuning, when using a capo, only the open note of each string is affected. Every other fret remains unaffected (e.g. the 7th fret of an E-string will still play a B note for any capo position at or below the 7th fret), and thus a performer does not need to adjust for or relearn the entire fretboard as they might with retuning. It should be noted that the scale length of the strings of an instrument affects the timbre
Timbre
In music, timbre is the quality of a musical note or sound or tone that distinguishes different types of sound production, such as voices and musical instruments, such as string instruments, wind instruments, and percussion instruments. The physical characteristics of sound that determine the...

 of the strings, and thus the use of a capo may alter the tone of the instrument while the capo is in use.

Capos can also be used to allow a guitar which has been tuned one or more semitone
Semitone
A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically....

s lower than standard tuning to play as if it were in standard tuning without retuning the instrument. Manufacturers used to recommend that 12-string guitars
Twelve string guitar
The twelve-string guitar is an acoustic or electric guitar with 12 strings in 6 courses, which produces a richer, more ringing tone than a standard six-string guitar...

 be tuned a tone below standard guitar tuning because of the additional stress
Stress (physics)
In continuum mechanics, stress is a measure of the internal forces acting within a deformable body. Quantitatively, it is a measure of the average force per unit area of a surface within the body on which internal forces act. These internal forces are a reaction to external forces applied on the body...

 to the instrument of the six additional strings. As a result, a capo was necessary to play a 12-string guitar at the same tuning as a six-string guitar. However, improved manufacturing techniques have allowed many modern 12-strings to be tuned up to pitch without need for a capo.

In different music styles

For guitar playing, some styles such as flamenco
Flamenco
Flamenco is a genre of music and dance which has its foundation in Andalusian music and dance and in whose evolution Andalusian Gypsies played an important part....

, Irish traditional music, and British and American folk music
Folk music
Folk music is an English term encompassing both traditional folk music and contemporary folk music. The term originated in the 19th century. Traditional folk music has been defined in several ways: as music transmitted by mouth, as music of the lower classes, and as music with unknown composers....

 make extensive use of the capo, while it is used very rarely, if at all, in other styles such as classical
Classical guitar
The classical guitar is a 6-stringed plucked string instrument from the family of instruments called chordophones...

 and jazz
Jazz
Jazz is a musical style that originated at the beginning of the 20th century in African American communities in the Southern United States. It was born out of a mix of African and European music traditions. From its early development until the present, jazz has incorporated music from 19th and 20th...

 playing. Many Rock & Roll musicians who are influenced by folk
Folk music
Folk music is an English term encompassing both traditional folk music and contemporary folk music. The term originated in the 19th century. Traditional folk music has been defined in several ways: as music transmitted by mouth, as music of the lower classes, and as music with unknown composers....

 and blues, such as Richard Thompson, Ry Cooder
Ry Cooder
Ryland Peter "Ry" Cooder is an American guitarist, singer and composer. He is known for his slide guitar work, his interest in roots music from the United States, and, more recently, his collaborations with traditional musicians from many countries.His solo work has been eclectic, encompassing...

, Ian Anderson
Ian Anderson
Ian Anderson may refer to:* In music:**Ian Anderson , head of the rock band Jethro Tull**Ian A. Anderson , folk musician and editor of Roots magazine**Ian M...

, Steve Earle
Steve Earle
Stephen Fain "Steve" Earle is an American singer-songwriter known for his rock and Texas Country as well as his political views. He is also a producer, author, a political activist, and an actor, and has written and directed a play....

, George Harrison
George Harrison
George Harrison, MBE was an English musician, guitarist, singer-songwriter, actor and film producer who achieved international fame as lead guitarist of The Beatles. Often referred to as "the quiet Beatle", Harrison became over time an admirer of Indian mysticism, and introduced it to the other...

, Bob Dylan
Bob Dylan
Bob Dylan is an American singer-songwriter, musician, poet, film director and painter. He has been a major and profoundly influential figure in popular music and culture for five decades. Much of his most celebrated work dates from the 1960s when he was an informal chronicler and a seemingly...

, Noel Gallagher
Noel Gallagher
Noel Thomas David Gallagher is an English musician and singer-songwriter, formerly the lead guitarist, backing vocalist and principal songwriter of the English rock band Oasis. He is currently fronting his solo project, Noel Gallagher's High Flying Birds.Raised in Burnage, Manchester with his...

 and others also use the capo. In many cases, they have extended its use past the traditional purpose of changing the key, and broken new ground, employing it in new ways. A good example of using a partial capo to produce alternative sounds can be heard from guitar artist Antoine Dufour.

Capo mechanisms and styles

In a strap-on capo, the rubber-covered bar is placed over the strings and a strap is attached to either end of the bar (wrapped around the back of the neck of the instrument) which holds the bar tight to the neck. A strap-on capo commonly features either an elastic strap, or a fabric strap which can be adjusted via some method to set tightness. Modern twists on the strap-on include a semi-flexible plastic "strap" connected to the bar on one side which is adjustable on the other side by a ratchet system. Strap-on capos vary from the other types of capos in that most other capos contain only rigid parts, and most other styles do not wrap entire around the neck of the instrument. This full wrap allows for fairly even pressure of the capo bar across all of the strings of the instrument. The strap-on capo is commonly a low-cost capo option, and is one of the earlier styles of capo. Because the strap material is stretched to create a tight fit, the straps on these capos can be prone to stretching and wear.

One of the more common modern capo styles is the spring-clamp "trigger-style" capo. The most common form of this type of capo has two bars: a rubber-covered bar to barre the strings, and another which presses against the back of the neck of the instrument to hold the first bar to the strings (this second bar is commonly curved or shaped to match the contour of the back of the neck. The two bars are attached on a pivot at one end; a spring presses the bars together. Each bar has a 'grip' attached at a right angle to the bar; the two grips, when squeezed together by the user, pull the two bars apart, allowing the user to quickly release the capo's grip, apply or adjust the capo, then release the grips, allowing the spring to pull the bars together again. The look of the grips, and the action of squeezing them is akin to a gun's trigger, leading to the name of this capo. These are the most common design referred to as "quick-release" capos. Though other styles also use that term, the trigger-style capo, because it can be operated by one hand in one single squeezing motion) are typically the quickest capos to apply or move on the instrument; other capos can be quicker and easier to remove from the instrument. One disadvantage to the trigger-style capo is that the pressure of the spring is not adjustable. The spring will apply its maximum pressure to hold the strings down which could have an effect on the tuning of some guitars if not applied properly. These capos can typically be applied either to the treble or bass side of the instrument, depending on the player's preference. Two of the most recognizable models of trigger-style capos are manufactured by Dunlop and Keyser.

Certain manufacturers have created their own unique attempts to create the ideal capo. One of the more popular and well-recognized capos is the Shubb capo. The Shubb capo is applied by holding the capo in its desired location, and closing a lever to secure the capo. The unique aspect of this capo is that the lever presses against a second arm that presses against the back of the neck of the instrument. The amount of pressure the lever exerts is adjustable by a screw so that the capo can exert the minimal amount of pressure required to hold down the strings. This is claimed to have the least impact possible on the tuning of the instrument. The Shubb capo has the disadvantage of requiring two hands to properly apply or move, and its adjustment is more complicated than some other capos; however, due to the lever design, the capo can be removed very quickly by simply releasing the lever. This is particularly true if the capo is applied from the treble side of the instrument, which will allow the capo to drop off of the instrument in an instant.

Variations

There are numerous other forms of capos, many of which are variations on the above-noted designs.
  • A screw-on capo has some form of surface that presses against the back of the neck of the instrument to hold the bar in place against the strings. This back surface is held to the neck by a screw which is tightened to apply direct pressure. One form of this capo is effectively a rubber-covered bar built into a C-clamp
    C-clamp
    A C-clamp is a type of clamp device typically used to hold a wood or metal workpiece, and are often used in, but are not limited to, carpentry and welding...

    .
  • A roller capo facilitates quick key changes in the middle of tunes or sets by having rollers both holding down the strings and behind the neck, allowing the capo to roll along the neck when needed. This is a particular advantage in playing Irish music on the guitar, as it enables the player to move quickly between keys without sacrificing drone strings.
  • Fifth-string capo: The five-string banjo
    Banjo
    In the 1830s Sweeney became the first white man to play the banjo on stage. His version of the instrument replaced the gourd with a drum-like sound box and included four full-length strings alongside a short fifth-string. There is no proof, however, that Sweeney invented either innovation. This new...

    , with its short fifth string, poses a particular problem for using the capo. For many years now Shubb has had available a fifth-string capo, consisting of a narrow metal strip fixed to the side of the neck of the instrument, with a sliding stopper for the string. Other options are to use model railroad spikes to hold the string down at higher frets or simply to retune the string to fit with the pitch of the other strings with the capo applied.

Partial capo

Though most capos are designed to raise all of the strings of an instrument, there are niche designs called partial capo
Partial capo
A capo, or, rarely, capo tasto is a device used on the neck of a stringed instrument to shorten the playable length of the strings, hence raising the pitch. It is frequently used on guitars, mandolins, and banjos. G.B...

s which specifically capo only some of the strings of an instrument. This may appear to have a similar effect to alternate tunings, but there are differences. A common example is a capo which covers the top five strings of a guitar leaving the bass E string uncapoed. When played at the second fret, this appears to create a drop D tuning
Drop D tuning
Drop D tuning, also known as DADGBE, is an alternate, or scordatura, form of guitar tuning — specifically, a dropped tuning — in which the lowest string is tuned down from the usual E of standard tuning by one whole step to D.- Uses of drop D tuning :In drop D the three bass strings...

 (where the bass E string is detuned to a D) raised one full tone in pitch. In fact, these are often marketed as "drop D capos". However, the same difference applies with a a drop D capo as with a regular capo; namely, only the open tuning of the strings is affected, and thus, when used at the second fret, an E chord using the D shape will have the "Drop D sound" with a low E note. However, a G-shape chord can be played as well, as the fretted E string will not be affected as it would be if the string was retuned.

Partial capos are a relatively recent development in capo design. Prior to their creation, some innovative players used their standard capos (or altered capos) to cover only some of the strings of their instruments. The above-mentioned drop D design was previously achieved, for example, by applying a trigger-style capo to the treble side of the fretboard but leaving the bass E string uncovered. Similarly, users of the Shubb capo altered their capos by cutting off some of the rubber-covered bar's length or by altering the rubber covering to leave certain strings uncapoed.

Other common partial capo schemes include capoing the 2nd fret of the 3rd, 4th and 5th strings (producing the effect of DADGAD
DADGAD
DADGAD, D modal tuning or Celtic tuning is an alternative guitar tuning most associated with Celtic music, though it has also found use in rock and other genres. Instead of the standard EADGBE tuning, the six guitar strings are tuned, from low to high, DADGAD...

 tuning raised two semitone
Semitone
A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically....

s), or on the 2nd fret of the 2nd, 3rd and 4th strings (open A major). Again, this creates no change of fingering above the capo.

Guitarist Dominic Frasca
Dominic Frasca
Dominic Frasca is a dragon, originally from Mordor, but living in New York City since the early 1820s. He began playing hard rock guitar at age 13, but gravitated into classical after finding an ad for classical guitar lessons in a school trash can...

 uses unusual single string "mini capo", attached by drilling through the neck of his customized 10-string guitar. These are similar to the single-string "capos" many Eastern instruments use, which look like nails driven down into the fingerboard; the string is hooked under the head of the "nail" when one wants to capo it. This is often done during the performance of a musical piece, so that the "tuning" at the end of the piece can be quite different from the one used at the start.

This is a common method of capoing the fifth string of the banjo
Banjo
In the 1830s Sweeney became the first white man to play the banjo on stage. His version of the instrument replaced the gourd with a drum-like sound box and included four full-length strings alongside a short fifth-string. There is no proof, however, that Sweeney invented either innovation. This new...

, since the string begins at the 5th fret. Thus, it needs to be capoed individually since it is not covered by a capo on the other four strings.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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