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{{short description|Musical instrument}}
{{Infobox instrument
|name=Clavichord
|names=Clarichord
|image=Hillclavichord.jpg
|image_capt=1977 unfretted clavichord by Keith Hill
|background=keyboard
|hornbostel_sachs=314.122-4-8
|hornbostel_sachs_desc=Simple [[chordophone]] with [[Musical keyboard|keyboard]] sounded by tangents
|developed=Early 14th century
|range=
|related=
|musicians=
|builders=
|articles=
}}

The '''clavichord''' is a stringed rectangular [[keyboard instrument]]<ref name="UK">{{cite web|url=https://www.ukpianos.co.uk/clavichord-history/|title=Clavichord history|publisher=UK Pianos|author=Graham Howard|date=December 2017|access-date=June 7, 2019}}</ref> that was used largely in the [[Late Middle Ages]], through the [[Renaissance music|Renaissance]], [[Baroque music|Baroque]] and [[Classical period (music)|Classical]] eras.<ref name="Rob">{{cite web|url=http://www.robertkelleyphd.com/clavichd.htm|title=Clavichord Technique and Performance Practice: An annotated bibliography|author=Robert Kelley|date=December 1998|access-date=June 7, 2019}}</ref>
Historically, it was mostly used as a practice instrument and as an aid to composition, not being loud enough for larger performances.<ref name="Rob"/>  The clavichord produces sound by striking brass or iron strings with small metal blades called tangents. Vibrations are transmitted through the bridge(s) to the soundboard.<ref name="UK"/>

==Etymology==
The name is derived from the [[Latin]] word ''clavis'', meaning "key" (associated with more common ''clavus'', meaning "nail, rod, etc.") and ''chorda'' (from Greek χορδή) meaning "string, especially of a musical instrument". An analogous name is used in other European languages (It. ''clavicordio'', ''clavicordo''; Fr. ''clavicorde''; Germ. ''Klavichord''; Lat. ''clavicordium''; Port. ''clavicórdio''; Sp. ''clavicordio''). Many languages also have another name derived from Latin ''manus'', meaning "hand" (It. ''manicordo''; Fr. ''manicorde'', ''manicordion''; Sp. ''manicordio'', ''manucordio''). Other names refer to the [[monochord]]-like nature of a fully fretted clavichord (It. ''monacordo'' or ''monocordo''; Sp. ''monacordio''). Italian also used ''sordino'', a reference to its quiet sound ([[sordino]] usually designates a mute).<ref>All of these translations appear in: {{Cite Grove |last=Ripin |first=Edwin M. |display-authors=etal |title=Clavichord}}</ref>

==History and use==
[[File:Clavicorde Lépante.JPG|thumb|The "Lépante" fretted clavichord,<ref>[http://mediatheque.cite-musique.fr/masc/?INSTANCE=CITEMUSIQUE&URL=/ClientBookLineCIMU/recherche/NoticeDetailleByID.asp Catalogue entry] {{webarchive|url=https://web.archive.org/web/20140419124012/http://mediatheque.cite-musique.fr/masc/?INSTANCE=CITEMUSIQUE&URL=%2Fclientbooklinecimu%2Frecherche%2FNoticeDetailleByID.asp |date=2014-04-19 }} for the Lépante clavichord, [[Cité de la Musique]], Paris (in French)</ref> Musée de la Musique, Paris]]

The clavichord was invented in the early fourteenth century.<ref>{{harvnb|Brauchli|1998}}</ref><ref>{{Harvnb|Jeans|1951}}</ref> In 1404, the German poem "{{Lang|de|Der Minne Regeln|italic=no}}" mentions the terms ''clavicimbalum'' (a term used mainly for the [[harpsichord]]) and ''clavichordium'', designating them as the best instruments to accompany melodies.

One of the earliest references to the clavichord in England occurs in the privy-purse expenses of Elizabeth of York, queen of Henry VII, in an entry dated August 1502:
<blockquote>Item. The same day, [[Hugh Denys]] for money by him delivered to a stranger that gave the queen a payre of clavycordes. In crowns form his reward [[Roman Numerals|iiii]] [[£sd#Origins|libres]].<ref>Brinsmead, Edgar. History of the Pianoforte, London, 1879. pp. 90–91</ref></blockquote>

The clavichord was very popular from the 16th century to the 18th century, but mainly flourished in German-speaking lands, [[Scandinavia]], and the [[Iberian Peninsula]] in the latter part of this period. It had fallen out of use by 1850. In the late 1890s, [[Arnold Dolmetsch]] revived clavichord construction and [[Violet Gordon-Woodhouse]], among others, helped to popularize the instrument. Although most of the instruments built before the 1730s were small (four octaves, four feet long), the latest instruments were built up to seven feet long with a six octave range.<ref name="UK"/> 

It was a preferred instrument in the 18th century due to its unique expressive features, size, elegance, and affordability.
Due to its lower cost compared to other instruments, the clavichord was accessible, making it the first choice for individuals who wanted to learn the keyboard. Composers such as Wolfgang Amadeus Mozart (1756–1791), used to bring the clavichord with them on their travels to practice.{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}}

During the Mozart family's visit to Augsburg, they had the chance to visit the outstanding German keyboard instruments maker, Johann Andreas Stein (1728–1792), and purchased a clavichord from him. In a letter to his friend, Leopold Mozart (1719–1787) described it as 
"A pretty little keyboard instrument, which does us good service for practicing on during our travels."{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}}

Until electronic amplification in the twentieth century, it was impossible to use the quiet clavichord in anything but a small room. However, during the clavichord's heyday, evenings of music-making in the home formed the largest part of people's musical experiences. In the home the clavichord was the ideal instrument for solo keyboard music and instrumental accompaniment.{{citation needed|date=June 2019}}Organists also were known to practice in their homes on [[Pedal clavichord|pedal clavichords]].

Today clavichords are played primarily by Renaissance, Baroque, and Classical music enthusiasts. They attract many interested buyers, and are manufactured worldwide. There are now numerous clavichord societies around the world, and some 400 recordings of the instrument have been made in the past 70 years. Leading modern exponents of the instrument have included [[Christopher Hogwood]] and [[Thurston Dart]].

===Modern music===
The clavichord has also gained attention in other genres of music, in the form of the [[Clavinet]], which is a solid body electric clavichord with magnetic pickups that plug into an amp. [[Stevie Wonder]] uses a Clavinet in many of his songs, such as "[[Superstition (song)|Superstition]]" and "[[Higher Ground (Stevie Wonder song)|Higher Ground]]". A Clavinet played through an [[instrument amplifier]] with guitar [[effect pedal]]s is often associated with [[funk]]y, [[disco]]-infused 1970s rock.

[[Guy Sigsworth]] has played clavichord in a modern setting with [[Björk]], notably on the studio recording of "[[All Is Full of Love]]". Björk also made extensive use of and even played the instrument herself on the song "My Juvenile" of her 2007 album ''[[Volta (album)|Volta]]''.

[[Tori Amos]] uses the instrument on "Little Amsterdam" from the album ''[[Boys for Pele]]'' and on the song "Smokey Joe" from her 2007 album ''[[American Doll Posse]]''. Amos also featured her use of the [[Clavinet]] on her 2004 recording "Not David Bowie", released as part of her 2006 [[box set]], ''[[A Piano: The Collection]]''.

In 1976 [[Oscar Peterson]] played (with Joe Pass on acoustic guitar) songs from ''Porgy And Bess'' on the clavichord. [[Keith Jarrett]] also recorded an album titled ''Book of Ways'' (1986) in which he plays a series of clavichord improvisations. [[The Beatles]]' "[[For No One]]" (1966) features [[Paul McCartney]] playing the clavichord. [[Rick Wakeman]] plays the Clavinet in the track "The Battle" from the album ''[[Journey to the Centre of the Earth (album)|Journey to the Centre of the Earth]]''.

==Structure and action==
<!--[[Tangent (clavichord)]] redirects directly here.-->
[[File:Clavichord action.svg|thumb|500px|Schematic diagram of clavichord mechanism: A/B. Keys. 1A/1B. Tangents. 2A/2B. Keylevers. 3. String. 4. Soundboard. 5. Bridge-pin, next to hitch-pin. 6. Damping felt, next to tuning peg. (Note that this sketch is a simplification. In the actual instrument, the strings run perpendicular to the keylevers. In other words, the strings run lengthwise in the instrument.)<ref>{{harvnb|Brauchli|1998|pp=1–10}}. The introduction to this book contains far more detailed and accurate diagrams, labeled by the technical names of the different parts of the clavichord.</ref>]]
[[File:Tangenty.JPG|thumb|Tangents]]
In the clavichord, strings run transversely from the [[hitchpin rail]] at the left-hand end to tuning pegs on the right. Towards the right end they pass over a curved wooden bridge. The action is simple, with the keys being levers with a small brass tangent, a small piece of metal similar in shape and size to the head of a flat-bladed screwdriver, at the far end. The strings, which are usually of brass, or else a combination of brass and iron, are usually arranged in pairs, like a lute or mandolin. When the key is pressed, the tangent strikes the strings above, causing them to sound in a similar fashion to the ''hammering'' technique on a guitar. Unlike in a piano action, the tangent does not rebound from the string; rather, it stays in contact with the string as long as the key is held, acting as both the [[Nut (string instrument)|nut]] and as the initiator of sound. The volume of the note can be changed by striking harder or softer, and the pitch can also be affected by varying the force of the tangent against the string (known as ''[[Bebung]]''). When the key is released, the tangent loses contact with the string and the vibration of the string is silenced by strips of damping cloth.
[[File:122 Museu de la Música.jpg|thumb|left|Detail of the Clavichord at [[Museu de la Música de Barcelona]]]]
The action of the clavichord is unique among all keyboard instruments in that one part of the action simultaneously initiates the sound vibration while at the same time defining the endpoint of the vibrating string, and thus its pitch. Because of this intimate contact between the player's hand and the production of sound, the clavichord has been referred to as the most intimate of keyboard instruments. Despite its many (serious) limitations, including extremely low volume, it has considerable expressive power, the player being able to control attack, duration, and volume, and even provide certain subtle effects of swelling of tone and a type of vibrato unique to the clavichord.

==Fretting==
[[File:Clavichord-JA Haas 007 reworked.jpg|thumb|left|Large five-octave unfretted clavichord by Paul Maurici, after [[Johann Adolph Hass|J.A. Hass]]]]
[[File:Clavicord.jpg|thumb|Fretted clavichord, copy of an unsigned instrument conserved in [[Namur]], [[Belgium]]. The way the same string pair is used for several notes is clearly visible in the full size image.|left]]
Since the string vibrates from the bridge only as far as the tangent, multiple keys with multiple tangents can be assigned to the same string. This is called ''fretting''. Early clavichords frequently had many notes played on each string, even going so far as the keyed [[monochord]]—an instrument with only one string—though most clavichords were triple- or double-fretted. Since only one note can be played at a time on each string, the fretting pattern is generally chosen so that notes rarely heard together (such as C and C{{music|#}}) share a string pair. The advantages of this system compared with unfretted instruments (see below) include relative ease of [[Musical tuning|tuning]] (with around half as many strings to keep in tune), greater volume (though still not really enough for use in [[chamber music]]), and a clearer, more direct sound. Among the disadvantages: [[Musical temperament|temperament]] could not be re-set without bending the tangents; and playing required a further refinement of touch, since notes sharing a single string played in quick succession had to be slightly separated to avoid a disagreeable deadening of the sound, potentially disturbing a [[legato]] line.

Some clavichords have been built with a single pair of strings for each note. The first known reference to one was by [[Johann Speth]] in 1693 and the earliest such extant signed and dated clavichord was built in 1716 by Johann Michael Heinitz. Such instruments are referred to as ''unfretted'' whereas instruments using the same strings for several notes are called ''fretted''. Among the advantages to unfretted instruments are flexibility in tuning (the temperament can be easily altered) and the ability to play any music exactly as written without concern for "bad" notes. Disadvantages include a smaller volume, even though many or most unfretted instruments tend to be significantly larger than fretted instruments; and ''many'' more strings to keep in tune. Unfretted instruments tend to have a sweeter, less incisive tone due to the greater load on the bridge resulting from the greater number of strings, though the large, late (early 19th century) Swedish clavichords tend to be the loudest of any of the historic clavichords.

==Pedal clavichord==
[[File:Pedal-clavichord.jpg|thumb|J. Verscheure Reynvaan: engraving of an eighteenth-century pedal clavichord]]
{{Main|Pedal clavichord}}

While clavichords were typically single manual instruments, they could be stacked, one clavichord on top of another, to provide multiple keyboards. With the addition of a [[pedal clavichord]], which included a [[pedal keyboard]] for the lower notes, a clavichord could be used to practice organ repertoire. Most often, the addition of a pedal keyboard only involved connecting the keys of the pedalboard to the lower notes on the manual clavichord using string so the lower notes on the manual instrument could be operated by the feet. In the era of [[pipe organ]]s, which used man-powered bellows that required several people to operate, and of churches only heated during church services if at all, organists used [[harpsichord|pedal harpsichord]]s and pedal clavichords as practice instruments (see also: [[pedal piano]]).<ref>The use of the pedal clavichord as a practice instrument is discussed by [[Friedrich Konrad Griepenkerl]] in the 1844 foreword to Volume I of the first edition of the complete organ works of J.S. Bach; see {{harvnb|Riemenschneider|1950}}.</ref> There is speculation that some works written for organ may have been intended for pedal clavichord. An interesting case is made by {{harvtxt|Speerstra|2004}} that [[Johann Sebastian Bach|Bach's]] [[Eight Short Preludes and Fugues|"Eight Little Preludes and Fugues"]], now thought spurious, may actually be authentic. The keyboard writing seems unsuited to organ, but Speerstra argues that they are idiomatic on the pedal clavichord. As Speerstra and {{harvtxt|Williams|2003}} also note, the compass of the keyboard parts of Bach's [[Organ Sonatas (Bach)|six trio sonatas for organ]] (BWV 525–530) rarely go below the tenor C, so they could have been played on a single manual pedal clavichord, by moving the left hand down an octave, a customary practice in the 18th century.

==Repertoire==
Much of the musical repertoire written for [[harpsichord]] and [[organ (music)|organ]] from the period circa 1400–1800 can be played on the clavichord; however, it does not have enough (unamplified) volume to participate in chamber music, with the possible exception of providing accompaniment to a soft baroque flute, recorder, or single singer. [[Johann Sebastian Bach|J. S. Bach's]] son [[Carl Philipp Emanuel Bach]] was a great proponent of the instrument, and most of his German contemporaries regarded it as a central keyboard instrument, for performing, teaching, composing and practicing. The fretting of a clavichord provides new problems for some repertoire, but scholarship suggests that these problems are not insurmountable in Bach's [[Well-Tempered Clavier]].

C. P. E. Bach, one of the leading representatives of the 'Empfindsamer stil' or 'Sensitive Style,' emphasized emotional depth and expressiveness in his compositions. The clavichord was very successful in conveying these characteristics. With its unique sound, touch sensitivity, and ability to convey the most delicate nuances, the clavichord became C. P. E. Bach's most preferred instrument.{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}} C. P. E. Bach also used the fortepiano in his compositions, but he was much more interested in the technical features provided by the clavichord. He mentioned this in his book (Versuch über die wahre, Art das Clavier zu spielen, Carl Philipp Emanuel Bach, Berlin, 1759.):
''"Of the many keyboard instruments, many of which are little known because of defects, or because they have not yet been introduced everywhere, there are two which have been most widely acclaimed, the harpsichord and the clavichord. The former is used mainly in louder music, the latter alone. The more recent pianofortes, when they are durable and well built, have many advantages, although their touch must be carefully worked out, a task which is not without difficulties. They sound well by themselves and in small ensembles. Yet, I hold that a good clavichord, except for its weaker tone, shares equally in the attractiveness of the pianoforte and in addition features the vibrato (Bebung) and portato (Tragen der Töne) which I produce by means of added pressure after each stroke. It is at the clavichord that a keyboard player may be most exactly evaluated."''{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}}{{sfn|Loucks|1992}}{{pn|date=November 2023}}

Among recent clavichord recordings, those by [[Christopher Hogwood]] (''The Secret Bach'', ''The Secret Handel'',<!-- That's the title: see http://www.amazon.co.uk/dp/B000CDYDGC --> and ''The Secret Mozart''), break new ground. In his liner notes, Hogwood pointed out that these composers would typically have played the clavichord in the privacy of their homes. In England, the composer [[Herbert Howells]] (1892–1983) wrote two significant collections of pieces for clavichord (''[[Herbert Lambert|Lambert]]'s Clavichord'' and ''Howells' Clavichord''), and [[Stephen Dodgson]] (1924–2013) wrote two clavichord suites. A comprehensive catalogue of modern clavichord works and discography was published in 2024.<ref>{{Cite book |last=Knights |first=Francis |title=Modern Clavichord Music |publisher=Peacock Press |year=2024 |isbn=978-1-914934-93-3 |location=Hebden Bridge |language=en}}</ref>

In a note written by Wolfgang Amadeus Mozart's wife, Constanze Mozart (1761–1842), found inside Mozart's clavichord, it is mentioned that Mozart composed his works, including The Magic Flute, La Clemenza di Tito, The Requiem, and a Masonic Cantata, on this clavichord.{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}}

Haydn composed the greater part of "The Creation", one of his masterpieces, on the clavichord. He used the clavichord to accompany the voice.{{sfn|Brauchli|1998|page=}}{{pn|date=November 2023}}

== See also ==
* {{Portal inline|Classical music}}
* [[Harpsichord]]

==References==
* [https://Boalch.org Boalch-Mould Online] A searchable database of 2000+ harpsichord and clavichord makers, 2500 instruments, and 4300 instrument photos.
=== Citations ===
{{Reflist|30em}}

=== Works cited ===
* {{cite book |last=Brauchli |first=Bernard |year=1998 |title=The Clavichord |url=https://books.google.com/books?id=7lpLypct4FEC |publisher=Cambridge University Press |isbn=0-521-63067-3}}
* {{cite journal |last=Jeans |first=Susi |year=1951 |title=The Pedal Clavichord and Other Practice Instruments of Organists |journal=Proceedings of the Royal Musical Association|volume=77 |issue=1 |pages=1–15 |jstor=766144 |series= Proceedings of the Royal Musical Association, 77th Sess., 1950–1951 |publisher=Oxford University Press |doi=10.1093/jrma/77.1.1}}
* {{cite journal |last=Loucks |first=Richard |date=Spring 1992 |title=Was the 'Well-Tempered Clavier' Performable on a Fretted Clavichord? |url=https://core.ac.uk/download/pdf/70971977.pdf |archive-url=https://web.archive.org/web/20220322020822/https://core.ac.uk/download/pdf/70971977.pdf |archive-date=2022-03-22 |url-status=live |journal=Performance Practice Review |volume=5 |issue=1 |pages=44–89 |doi=10.5642/perfpr.199205.01.02|doi-access=free }}
* {{cite book |last=Riemenschneider |first=Albert |author-link=Albert Riemenschneider |year=1950 |title=Preface and Translations of Forewords by Friedrich Konrad Griepenkerl to Organ Works of J. S. Bach |location=New York |publisher=C. F. Peters |oclc=81743352}}
* {{cite book |last=Speerstra |first=Joel |title=Bach and the Pedal Clavichord: An Organist's Guide|year=2004|publisher=University of Rochester Press|isbn=1-58046-135-2}}
* {{cite book |last=Williams |first=Peter |title=The Organ Music of J. S. Bach|edition=2nd|publisher=Cambridge University Press|year=2003|isbn=0-521-89115-9|pages=4–6}}

==Further reading==
* {{cite book |last=Kipnis |first=Igor |year=2007 |title=The Harpsichord and Clavichord: An Encyclopedia |publisher=Routledge |isbn=978-0415937658}}
* {{cite book |last=Kottick |first=Edward L. |year=1997 |title=Early Keyboard Instruments in European Museums |publisher=Indiana University Press |isbn=0-253-33239-7}}

==External links==
{{Commons category|Clavichords}}
* [https://assets.cambridge.org/97805216/19899/excerpt/9780521619899_excerpt.pdf Introduction of "The Clavichord" by Bernard Brauchli]
* [https://www.classical-music.com/features/musical-terms/what-is-a-clavichord "What Is a Clavichord?"] by [[Julian Perkins]]; a brief introduction to the clavichord for ''[[BBC Music Magazine]]''
* [http://www.clavichordgenootschap.nl/ Clavichord International]
* [http://www.clavichord.org.uk/Home.html British Clavichord Society]
* [http://www.bostonclavichord.org Boston Clavichord Society]
* {{webarchive|url=https://web.archive.org/web/20160303213006/http://www.fmil.org/instruments.php?instrument=clavecins-pedalier |date=3 March 2016|title="Clavecin-pédalier" by Yves Rechsteiner, 2001}} {{in lang|fr}}
* [https://heinrich-schuetz-haus.de/instrumente_schuetzzeit/clavichord.php Clavichords] at the house of [[Heinrich Schütz]] {{in lang|de}}
* [https://www.metmuseum.org/art/collection/search/503271 Clavichord by Christian Kintzing, Neuwied, Germany, 1763] at the [[Metropolitan Museum of Art]]

{{Musical keyboards}}
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