The clavichord is a stringed rectangular keyboard instrument that was used largely in the Late Middle Ages, through the Renaissance, Baroque music and Classical eras. Historically, it was mostly used as a practice instrument and as an aid to composition, not being loud enough for larger performances. 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.
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:
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 libres.Brinsmead, Edgar. History of the Pianoforte, London, 1879. pp. 90–91
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.
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.
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."
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.Organists also were known to practice in their homes on Pedal clavichord.
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.
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.
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, .
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.
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.
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. 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."
Among recent clavichord recordings, those by Christopher Hogwood ( The Secret Bach, The Secret Handel, 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'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.
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.
Haydn composed the greater part of "The Creation", one of his masterpieces, on the clavichord. He used the clavichord to accompany the voice.
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