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There is no mention of the company past the s. The pedal piano is a rare type malldt piano that has a pedal keyboard at the base, designed to be played by white mallet hammer piano feet. While that is a correct statement, pianos are so much more than those hammef. The square piano not truly square, but rectangular was cross strung at an extremely acute angle above the white mallet hammer piano, with the keyboard set along the long side. QRS Music Technologies. Early technological progress in the late s owed much to the firm of Broadwood.

The denser the wood, conversely, the heavier the hammer where more energy is required. Hornbeam, walnut and mahogany are wood types that are commonly used for hammer mouldings.

Each manufacturer makes decisions around what wood to use in their hammer heads. In my way of thinking, the wood at the center of the hammer is more related to touch of the piano because every gram at the hammer weights the keys at a 5 or ratio. Two extra grams at the hammer make the touch grams heavier at the keyboard. Manufacturing Hot pressed hammers are ones that have added heat while the hammers are being formed.

Have you ever ironed clothes and left the iron in one spot a little too long? Heat has the propensity to change wool fibres. The same can be said about hot pressed hammers. The addition of heat can actually alter the tone.

This trend along with the addition of chemicals and staples to help affix the wool to the wooden hammer moulding represent a hammer that will not be readily voiced or be pleasing to listen to. The pendulum has swung the other way for the better, thankfully in the last decade to see the dominance of cold pressed hammers which is the more traditional method of hammer making. Subtle warmth is still sometimes used but can still be categorized as cold pressed.

This leaves the fibres of the wool untarnished, unburnished and more in their natural state. How do you know if hammers are cold or hot pressed?

Tonal variety require versatility that I feel can only be found in cold pressed hammers. Voicing When I was young, I believed that every piano brand had its own voice. This is still a correct statement however voicing a piano can alter almost half of the perceived tone of a piano.

Voicing does not change the core of tone which is why it is so important to start with great materials but a good technician can release the potential of the tone for the pianist.

Sometimes pianos are pingy, dull, thunky, harsh or wild with overtones. No, those are not technical terms :D They can sound unfocused or lack sustain. Brilliance or body can be optimized in a piano by voicing.

You can read more about this on Piano Price Point here. It is an incredibly important and often undervalued part of the final stages when purchasing a piano and should not be overlooked.

I like to listen to music the same way. Innately I think that hammers should somehow be invisible. Only when they are offensive do I start pulling them apart and analyzing what is at fault and what can be done to rectify them.

The piano should be an extension of thought uninhibited. The message then is: play many pianos and discover what you like. The World's Best Selling Piano. Available in PDF or hard copy delivered to your door. Due to the pandemic, the show was cancelled and so I thought that this would be a great time to adapt and bring about a Virtual Piano Trade Show.

In hosting this Virtual Piano Trade Show, it occurred Read More. Hood ornaments and emblems were symbols of flight with angelic creatures or airplanes. All of this had a purpose of course; it pointed to future thinking, an association with flight. Just as there was a In my mind, concert grands are the Formula 1 pianos where a company invests the very best in technology, materials and workmanship to present their utmost to the world.

What surprised me about this piano was the response. How Old Is Too Old? Nothing beats a new piano and Piano Price Point is dedicated to delivering the news about the makers of new pianos. But sometimes they are simply unaffordable, inaccessible or possibly even discontinued and so it necessitates buying used.

But that begs the question, how old is too old? At what point do pianos no longer function the way they were originally intended?

It begs the question, what are they experiencing that compels them to perform on their pianos? When the key is released, a damper stops the strings' vibration, ending the sound.

Notes can be sustained, even when the keys are released by the fingers and thumbs, by the use of pedals at the base of the instrument. The sustain pedal enables pianists to play musical passages that would otherwise be impossible, such as sounding a note chord in the lower register and then, while this chord is being continued with the sustain pedal, shifting both hands to the treble range to play a melody and arpeggios over the top of this sustained chord.

Unlike the pipe organ and harpsichord, two major keyboard instruments widely used before the piano, the piano allows gradations of volume and tone according to how forcefully or softly a performer presses or strikes the keys. Most modern pianos have a row of 88 black and white keys, 52 white keys for the notes of the C major scale C, D, E, F, G, A and B and 36 shorter black keys, which are raised above the white keys, and set further back on the keyboard. This means that the piano can play 88 different pitches or "notes" , going from the deepest bass range to the highest treble.

The strings are sounded when keys are pressed or struck, and silenced by dampers when the hands are lifted from the keyboard. Although an acoustic piano has strings, it is usually classified as a percussion instrument rather than as a stringed instrument, because the strings are struck rather than plucked as with a harpsichord or spinet ; in the Hornbostel—Sachs system of instrument classification, pianos are considered chordophones.

There are two main types of piano: the grand piano and the upright piano. The grand piano has a better sound and gives the player a more precise control of the keys, and is therefore the preferred choice for every situation in which the available floor-space and the budget will allow, as well as often being considered a requirement in venues where skilled pianists will frequently give public performances.

The upright piano, which necessarily involves some compromise in both tone and key action compared to a grand piano of equivalent quality, is nevertheless much more widely used, because it occupies less space allowing it to fit comfortably in a room where a grand piano would be too large and is significantly less expensive. During the s, influenced by the musical trends of the Romantic music era , innovations such as the cast iron frame which allowed much greater string tensions and aliquot stringing gave grand pianos a more powerful sound, with a longer sustain and richer tone.

In the nineteenth century, a family's piano played the same role that a radio or phonograph played in the twentieth century; when a nineteenth-century family wanted to hear a newly published musical piece or symphony , they could hear it by having a family member play a simplified version on the piano.

During the nineteenth century, music publishers produced many types of musical works symphonies, opera overtures, waltzes, etc. The piano is widely employed in classical , jazz , traditional and popular music for solo and ensemble performances, accompaniment, and for composing , songwriting and rehearsals. Although the piano is very heavy and thus not portable and is expensive in comparison with other widely used accompaniment instruments, such as the acoustic guitar , its musical versatility i.

The piano was founded on earlier technological innovations in keyboard instruments. Pipe organs have been used since antiquity, and as such, the development of pipe organs enabled instrument builders to learn about creating keyboard mechanisms for sounding pitches.

The first string instruments with struck strings were the hammered dulcimers , [6] which were used since the Middle Ages in Europe. During the Middle Ages, there were several attempts at creating stringed keyboard instruments with struck strings. In a clavichord, the strings are struck by tangents, while in a harpsichord, they are mechanically plucked by quills when the performer depresses the key. Centuries of work on the mechanism of the harpsichord in particular had shown instrument builders the most effective ways to construct the case, soundboard, bridge, and mechanical action for a keyboard intended to sound strings.

It is not known exactly when Cristofori first built a piano. An inventory made by his employers, the Medici family, indicates the existence of a piano by the year The three Cristofori pianos that survive today date from the s. Cristofori's great success was designing a stringed keyboard instrument in which the notes are struck by a hammer. The hammer must strike the string, but not remain in contact with it, because this would damp the sound and stop the string from vibrating and making sound.

This means that after striking the string, the hammer must fall from or rebound from the strings. Moreover, the hammer must return to its rest position without bouncing violently, and it must return to a position in which it is ready to play almost immediately after its key is depressed so the player can repeat the same note rapidly.

Cristofori's piano action was a model for the many approaches to piano actions that followed in the next century. Cristofori's early instruments were made with thin strings, and were much quieter than the modern piano, but they were much louder and with more sustain in comparison to the clavichord—the only previous keyboard instrument capable of dynamic nuance responding to the player's touch, or the velocity with which the keys are pressed.

While the clavichord allows expressive control of volume and sustain, it is relatively quiet. The harpsichord produces a sufficiently loud sound, especially when a coupler joins each key to both manuals of a two-manual harpsichord, but it offers no dynamic or expressive control over each note.

The piano offers the best of both instruments, combining the ability to play loudly and perform sharp accents. Cristofori's new instrument remained relatively unknown until an Italian writer, Scipione Maffei , wrote an enthusiastic article about it in , including a diagram of the mechanism, that was translated into German and widely distributed.

One of these builders was Gottfried Silbermann , better known as an organ builder. Silbermann's pianos were virtually direct copies of Cristofori's, with one important addition: Silbermann invented the forerunner of the modern sustain pedal , which lifts all the dampers from the strings simultaneously. As such, by holding a chord with the sustain pedal, pianists can relocate their hands to a different register of the keyboard in preparation for a subsequent section. Silbermann showed Johann Sebastian Bach one of his early instruments in the s, but Bach did not like the instrument at that time, saying that the higher notes were too soft to allow a full dynamic range.

Although this earned him some animosity from Silbermann, the criticism was apparently heeded. Piano-making flourished during the late 18th century in the Viennese school , which included Johann Andreas Stein who worked in Augsburg , Germany and the Viennese makers Nannette Streicher daughter of Stein and Anton Walter.

Viennese-style pianos were built with wood frames, two strings per note, and leather-covered hammers. Some of these Viennese pianos had the opposite coloring of modern-day pianos; the natural keys were black and the accidental keys white.

The pianos of Mozart's day had a softer tone than 21st century pianos or English pianos, with less sustaining power. The term fortepiano now distinguishes these early instruments and modern re-creations from later pianos. In the period from about to , the Mozart-era piano underwent tremendous changes that led to the modern structure of the instrument.

This revolution was in response to a preference by composers and pianists for a more powerful, sustained piano sound, and made possible by the ongoing Industrial Revolution with resources such as high-quality piano wire for strings , and precision casting for the production of massive iron frames that could withstand the tremendous tension of the strings.

Early technological progress in the late s owed much to the firm of Broadwood. John Broadwood joined with another Scot, Robert Stodart, and a Dutchman, Americus Backers , to design a piano in the harpsichord case—the origin of the "grand".

This was achieved by about They quickly gained a reputation for the splendour and powerful tone of their instruments, with Broadwood constructing pianos that were progressively larger, louder, and more robustly constructed. They sent pianos to both Joseph Haydn and Ludwig van Beethoven , and were the first firm to build pianos with a range of more than five octaves: five octaves and a fifth during the s, six octaves by Beethoven used the extra notes in his later works , and seven octaves by The Viennese makers similarly followed these trends; however the two schools used different piano actions: Broadwoods used a more robust action, whereas Viennese instruments were more sensitive.

This facilitated rapid playing of repeated notes, a musical device exploited by Liszt. When the invention became public, as revised by Henri Herz , the double escapement action gradually became standard in grand pianos, and is still incorporated into all grand pianos currently produced in the s. Other improvements of the mechanism included the use of firm felt hammer coverings instead of layered leather or cotton.

Felt, which was first introduced by Jean-Henri Pape in , was a more consistent material, permitting wider dynamic ranges as hammer weights and string tension increased. The sostenuto pedal see below , invented in by Jean-Louis Boisselot and copied by the Steinway firm in , allowed a wider range of effects. One innovation that helped create the powerful sound of the modern piano was the use of a massive, strong, cast iron frame. Also called the "plate", the iron frame sits atop the soundboard , and serves as the primary bulwark against the force of string tension that can exceed 20 tons kilonewtons in a modern grand piano.

Composite forged metal frames were preferred by many European makers until the American system was fully adopted by the early 20th century. The increased structural integrity of the iron frame allowed the use of thicker, tenser, and more numerous strings. Several important advances included changes to the way the piano was strung. The use of a "choir" of three strings, rather than two for all but the lowest notes, enhanced the richness and complexity of the treble.

The implementation of over-stringing also called cross-stringing , in which the strings are placed in two separate planes, each with its own bridge height, allowed greater length to the bass strings and optimized the transition from unwound tenor strings to the iron or copper-wound bass strings.

Over-stringing was invented by Pape during the s, and first patented for use in grand pianos in the United States by Henry Steinway Jr. These systems were used to strengthen the tone of the highest register of notes on the piano, which up until this time were viewed as being too weak-sounding.

While the hitchpins of these separately suspended Aliquot strings are raised slightly above the level of the usual tri-choir strings, they are not struck by the hammers but rather are damped by attachments of the usual dampers. Eager to copy these effects, Theodore Steinway invented duplex scaling , which used short lengths of non-speaking wire bridged by the "aliquot" throughout much of the upper range of the piano, always in locations that caused them to vibrate sympathetically in conformity with their respective overtones—typically in doubled octaves and twelfths.

Some early pianos had shapes and designs that are no longer in use. The square piano not truly square, but rectangular was cross strung at an extremely acute angle above the hammers, with the keyboard set along the long side. Their overwhelming popularity was due to inexpensive construction and price, although their tone and performance were limited by narrow soundboards, simple actions and string spacing that made proper hammer alignment difficult. The tall, vertically strung upright grand was arranged like a grand set on end, with the soundboard and bridges above the keys, and tuning pins below them.

The very tall cabinet piano was introduced about and was built through the s. It had strings arranged vertically on a continuous frame with bridges extended nearly to the floor, behind the keyboard and very large sticker action. The short cottage upright or pianino with vertical stringing, made popular by Robert Wornum around , was built into the 20th century.

They are informally called birdcage pianos because of their prominent damper mechanism. The tiny spinet upright was manufactured from the mids until recent times. The low position of the hammers required the use of a "drop action" to preserve a reasonable keyboard height. Modern upright and grand pianos attained their present, era forms by the end of the 19th century. While improvements have been made in manufacturing processes, and many individual details of the instrument continue to receive attention, and a small number of acoustic pianos in the s are produced with MIDI recording and digital sound module -triggering capabilities, the 19th century was the era of the most dramatic innovations and modifications of the instrument.

Modern pianos have two basic configurations, the grand piano and the upright piano, with various styles of each. There are also specialized and novelty pianos, electric pianos based on electromechanical designs, electronic pianos that synthesize piano-like tones using oscillators, and digital pianos using digital samples of acoustic piano sounds.

In grand pianos the frame and strings are horizontal, with the strings extending away from the keyboard. The action lies beneath the strings, and uses gravity as its means of return to a state of rest. Grand pianos range in length from approximately 1.

Some of the lengths have been given more-or-less customary names, which vary from time to time and place to place, but might include:. All else being equal, longer pianos with longer strings have larger, richer sound and lower inharmonicity of the strings.

Inharmonicity is the degree to which the frequencies of overtones known as partials or harmonics sound sharp relative to whole multiples of the fundamental frequency. This results from the piano's considerable string stiffness; as a struck string decays its harmonics vibrate, not from their termination, but from a point very slightly toward the center or more flexible part of the string.

The higher the partial, the further sharp it runs. Pianos with shorter and thicker string i. The greater the inharmonicity, the more the ear perceives it as harshness of tone. The inharmonicity of piano strings requires that octaves be stretched , or tuned to a lower octave's corresponding sharp overtone rather than to a theoretically correct octave. If octaves are not stretched, single octaves sound in tune, but double—and notably triple—octaves are unacceptably narrow.

Stretching a small piano's octaves to match its inherent inharmonicity level creates an imbalance among all the instrument's intervallic relationships.

In a concert grand, however, the octave "stretch" retains harmonic balance, even when aligning treble notes to a harmonic produced from three octaves below. This lets close and widespread octaves sound pure, and produces virtually beatless perfect fifths.

This gives the concert grand a brilliant, singing and sustaining tone quality—one of the principal reasons that full-size grands are used in the concert hall. Smaller grands satisfy the space and cost needs of domestic use; as well, they are used in some small teaching studios and smaller performance venues.

Upright pianos, also called vertical pianos, are more compact due to the vertical structure of the frame and strings. The mechanical action structure of the upright piano was invented in London, England in by Robert Wornum , and upright models became the most popular model.

The hammers move horizontally, and return to their resting position via springs, which are susceptible to degradation. Upright pianos with unusually tall frames and long strings were sometimes marketed as upright grand pianos, but that label is misleading.

Some authors classify modern pianos according to their height and to modifications of the action that are necessary to accommodate the height.

Upright pianos are generally less expensive than grand pianos. Upright pianos are widely used in churches, community centers , schools, music conservatories and university music programs as rehearsal and practice instruments, and they are popular models for in-home purchase.

The toy piano , introduced in the 19th century, is a small piano-like instrument, that generally uses round metal rods to produce sound, rather than strings. A machine perforates a performance recording into rolls of paper, and the player piano replays the performance using pneumatic devices.

A silent piano is an acoustic piano having an option to silence the strings by means of an interposing hammer bar. They are designed for private silent practice, to avoid disturbing others.

Edward Ryley invented the transposing piano in This rare instrument has a lever under the keyboard as to move the keyboard relative to the strings so a pianist can play in a familiar key while the music sounds in a different key. The minipiano is an instrument patented by the Brasted brothers of the Eavestaff Ltd. The first model, known as the Pianette , was unique in that the tuning pins extended through the instrument, so it could be tuned at the front. The prepared piano , present in some contemporary art music from the 20th and 21st century is a piano with objects placed inside it to alter its sound, or has had its mechanism changed in some other way.

The scores for music for prepared piano specify the modifications, for example, instructing the pianist to insert pieces of rubber, paper, metal screws, or washers in between the strings. These objects mute the strings or alter their timbre. The pedal piano is a rare type of piano that has a pedal keyboard at the base, designed to be played by the feet. The pedals may play the existing bass strings on the piano, or rarely, the pedals may have their own set of bass strings and hammer mechanisms.

While the typical intended use for pedal pianos is to enable a keyboardist to practice pipe organ music at home, a few players of pedal piano use it as a performance instrument. Wadia Sabra had a microtone piano manufactured by Pleyel in With technological advances , amplified electric pianos , electronic pianos s , and digital pianos s have been developed. The electric piano became a popular instrument in the s and s genres of jazz fusion , funk music and rock music. The first electric pianos from the late s used metal strings with a magnetic pickup , an amplifier and a loudspeaker.

The electric pianos that became most popular in pop and rock music in the s and s, such as the Fender Rhodes use metal tines in place of strings and use electromagnetic pickups similar to those on an electric guitar. The resulting electrical, analogue signal can then be amplified with a keyboard amplifier or electronically manipulated with effects units. Electric pianos are rarely used in classical music, where the main usage of them is as inexpensive rehearsal or practice instruments in music schools.

However, electric pianos, particularly the Fender Rhodes , became important instruments in s funk and jazz fusion and in some rock music genres.

Electronic pianos are non-acoustic; they do not have strings, tines or hammers, but are a type of synthesizer that simulates or imitates piano sounds using oscillators and filters that synthesize the sound of an acoustic piano. Alternatively, a person can play an electronic piano with headphones in quieter settings. Digital pianos are also non-acoustic and do not have strings or hammers.

They use digital sampling technology to reproduce the acoustic sound of each piano note accurately. They also must be connected to a power amplifier and speaker to produce sound however, most digital pianos have a built-in amp and speaker.

Alternatively, a person can practice with headphones to avoid disturbing others. Digital pianos can include sustain pedals, weighted or semi-weighted keys, multiple voice options e. MIDI inputs and outputs connect a digital piano to other electronic instruments or musical devices.

For example, a digital piano's MIDI out signal could be connected by a patch cord to a synth module , which would allow the performer to use the keyboard of the digital piano to play modern synthesizer sounds. Early digital pianos tended to lack a full set of pedals but the synthesis software of later models such as the Yamaha Clavinova series synthesised the sympathetic vibration of the other strings such as when the sustain pedal is depressed and full pedal sets can now be replicated.

The processing power of digital pianos has enabled highly realistic pianos using multi-gigabyte piano sample sets with as many as ninety recordings, each lasting many seconds, for each key under different conditions e. Additional samples emulate sympathetic resonance of the strings when the sustain pedal is depressed, key release, the drop of the dampers, and simulations of techniques such as re-pedalling. The MIDI file records the physics of a note rather than its resulting sound and recreates the sounds from its physical properties e.

Computer based software, such as Modartt's Pianoteq , can be used to manipulate the MIDI stream in real time or subsequently to edit it. This type of software may use no samples but synthesize a sound based on aspects of the physics that went into the creation of a played note. In the s, some pianos include an acoustic grand piano or upright piano combined with MIDI electronic features.

Such a piano can be played acoustically, or the keyboard can be used as a MIDI controller , which can trigger a synthesizer module or music sampler. Some electronic feature-equipped pianos such as the Yamaha Disklavier electronic player piano, introduced in , are outfitted with electronic sensors for recording and electromechanical solenoids for player piano-style playback.

On playback, the solenoids move the keys and pedals and thus reproduce the original performance. Disklaviers have been manufactured in the form of upright, baby grand, and grand piano styles including a nine-foot concert grand.

Reproducing systems have ranged from relatively simple, playback-only models to professional models that can record performance data at resolutions that exceed the limits of normal MIDI data. Pianos can have over 12, individual parts, [31] supporting six functional features: keyboard, hammers, dampers, bridge, soundboard, and strings.

This is especially true of the outer rim. It is most commonly made of hardwood , typically hard maple or beech , and its massiveness serves as an essentially immobile object from which the flexible soundboard can best vibrate. According to Harold A.

Conklin, [33] the purpose of a sturdy rim is so that, " Hardwood rims are commonly made by laminating thin, hence flexible, strips of hardwood, bending them to the desired shape immediately after the application of glue. Theodore Steinway in to reduce manufacturing time and costs.

Previously, the rim was constructed from several pieces of solid wood, joined and veneered, and European makers used this method well into the 20th century. The thick wooden posts on the underside grands or back uprights of the piano stabilize the rim structure, and are made of softwood for stability. The requirement of structural strength, fulfilled by stout hardwood and thick metal, makes a piano heavy.

Even a small upright can weigh kg lb , and the Steinway concert grand Model D weighs kg 1, lb. The largest piano available on the general market, the Fazioli F, weighs kg 1, lb.

The pinblock, which holds the tuning pins in place, is another area where toughness is important. It is made of hardwood typically hard maple or beech , and is laminated for strength, stability and longevity. Piano strings also called piano wire , which must endure years of extreme tension and hard blows, are made of high carbon steel. They are manufactured to vary as little as possible in diameter, since all deviations from uniformity introduce tonal distortion.

The bass strings of a piano are made of a steel core wrapped with copper wire, to increase their mass whilst retaining flexibility. If all strings throughout the piano's compass were individual monochord , the massive bass strings would overpower the upper ranges. Makers compensate for this with the use of double bichord strings in the tenor and triple trichord strings throughout the treble. The plate harp , or metal frame, of a piano is usually made of cast iron.

A massive plate is advantageous. Since the strings vibrate from the plate at both ends, an insufficiently massive plate would absorb too much of the vibrational energy that should go through the bridge to the soundboard.

While some manufacturers use cast steel in their plates, most prefer cast iron. Cast iron is easy to cast and machine, has flexibility sufficient for piano use, is much more resistant to deformation than steel, and is especially tolerant of compression. Plate casting is an art, since dimensions are crucial and the iron shrinks about one percent during cooling. Including an extremely large piece of metal in a piano is potentially an aesthetic handicap.

Piano makers overcome this by polishing, painting, and decorating the plate. Plates often include the manufacturer's ornamental medallion. In an effort to make pianos lighter, Alcoa worked with Winter and Company piano manufacturers to make pianos using an aluminum plate during the s.

Aluminum piano plates were not widely accepted, and were discontinued. The numerous parts of a piano action are generally made from hardwood , such as maple , beech , and hornbeam , however, since World War II, makers have also incorporated plastics. Early plastics used in some pianos in the late s and s, proved disastrous when they lost strength after a few decades of use. Beginning in , the New York branch of the Steinway firm incorporated Teflon , a synthetic material developed by DuPont , for some parts of its Permafree grand action in place of cloth bushings, but abandoned the experiment in due to excessive friction and a "clicking" that developed over time; Teflon is "humidity stable" whereas the wood adjacent to the Teflon swells and shrinks with humidity changes, causing problems.

More recently, the Kawai firm built pianos with action parts made of more modern materials such as carbon fiber reinforced plastic , and the piano parts manufacturer Wessell, Nickel and Gross has launched a new line of carefully engineered composite parts. Thus far these parts have performed reasonably, but it will take decades to know if they equal the longevity of wood.

In all but the lowest quality pianos the soundboard is made of solid spruce that is, spruce boards glued together along the side grain. Spruce's high ratio of strength to weight minimizes acoustic impedance while offering strength sufficient to withstand the downward force of the strings. The best piano makers use quarter-sawn, defect-free spruce of close annular grain, carefully seasoning it over a long period before fabricating the soundboards. This is the identical material that is used in quality acoustic guitar soundboards.

Cheap pianos often have plywood soundboards. The design of the piano hammers requires having the hammer felt be soft enough so that it will not create loud, very high harmonics that a hard hammer will cause. The hammer must be lightweight enough to move swiftly when a key is pressed; yet at the same time, it must be strong enough so that it can hit strings hard when the player strikes the keys forcefully for fortissimo playing or sforzando accents.

In the early years of piano construction, keys were commonly made from sugar pine. In the s, they are usually made of spruce or basswood.

Spruce is typically used in high-quality pianos. Black keys were traditionally made of ebony , and the white keys were covered with strips of ivory. However, since ivory-yielding species are now endangered and protected by treaty, or are illegal in some countries, makers use plastics almost exclusively.

Also, ivory tends to chip more easily than plastic. Legal ivory can still be obtained in limited quantities. The Yamaha firm invented a plastic called Ivorite that they claim mimics the look and feel of ivory. It has since been imitated by other makers. Almost every modern piano has 52 white keys and 36 black keys for a total of 88 keys seven octaves plus a minor third, from A 0 to C 8. Many older pianos only have 85 keys seven octaves from A 0 to A 7.

Some piano manufacturers have extended the range further in one or both directions. These extra keys are sometimes hidden under a small hinged lid that can cover the keys to prevent visual disorientation for pianists unfamiliar with the extra keys, or the colours of the extra white keys are reversed black instead of white.

The extra keys are added primarily for increased resonance from the associated strings; that is, they vibrate sympathetically with other strings whenever the damper pedal is depressed and thus give a fuller tone.

Only a very small number of works composed for piano actually use these notes. The toy piano manufacturer Schoenhut started manufacturing both grands and uprights with only 44 or 49 keys, and shorter distance between the keyboard and the pedals.

These pianos are true pianos with action and strings. The pianos were introduced to their product line in response to numerous requests in favor of it. It consisted of two keyboards lying one above each other. The lower keyboard has the usual 88 keys and the upper keyboard has 76 keys. When pressing the upper keyboard the internal mechanism pulls down the corresponding key on the lower keyboard, but an octave higher. This lets a pianist reach two octaves with one hand, impossible on a conventional piano.

Due to its double keyboard musical work that were originally created for double-manual harpsichord such as Goldberg Variations by Bach become much easier to play, since playing on a conventional single keyboard piano involve complex and hand-tangling cross-hand movements. The design also featured a special fourth pedal that coupled the lower and upper keyboard, so when playing on the lower keyboard the note one octave higher also played. Pianos have been built with alternative keyboard systems, e.

Pianos have had pedals, or some close equivalent, since the earliest days. In the 18th century, some pianos used levers pressed upward by the player's knee instead of pedals. Most grand pianos in the US have three pedals: the soft pedal una corda , sostenuto, and sustain pedal from left to right, respectively , while in Europe, the standard is two pedals: the soft pedal and the sustain pedal.

Most modern upright pianos also have three pedals: soft pedal, practice pedal and sustain pedal, though older or cheaper models may lack the practice pedal. In Europe the standard for upright pianos is two pedals: the soft and the sustain pedals. The sustain pedal or, damper pedal is often simply called "the pedal", since it is the most frequently used.

It is placed as the rightmost pedal in the group. It lifts the dampers from all keys, sustaining all played notes. In addition, it alters the overall tone by allowing all strings, including those not directly played, to reverberate. When all of the other strings on the piano can vibrate, this allows sympathetic vibration of strings that are harmonically related to the sounded pitches. For example, if the pianist plays the Hz "A" note, the higher octave "A" notes will also sound sympathetically.

The soft pedal or una corda pedal is placed leftmost in the row of pedals. In the earliest pianos whose unisons were bichords rather than trichords, the action shifted so that hammers hit a single string, hence the name una corda , or 'one string'. The effect is to soften the note as well as change the tone. In uprights this action is not possible; instead the pedal moves the hammers closer to the strings, allowing the hammers to strike with less kinetic energy.

This produces a slightly softer sound, but no change in timbre. On grand pianos, the middle pedal is a sostenuto pedal. This pedal keeps raised any damper already raised at the moment the pedal is depressed. This makes it possible to sustain selected notes by depressing the sostenuto pedal before those notes are released while the player's hands are free to play additional notes which don't sustain. This can be useful for musical passages with low bass pedal points , in which a bass note is sustained while a series of chords changes over top of it, and other otherwise tricky parts.

On many upright pianos, the middle pedal is called the "practice" or celeste pedal. This drops a piece of felt between the hammers and strings, greatly muting the sounds. This pedal can be shifted while depressed, into a "locking" position.

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