Piano
The piano is a musical instrument played by means of a keyboard that produces sound by striking steel strings with felt hammers. The hammers immediately rebound allowing the strings to continue vibrating at their resonant frequency. These vibrations are transmitted through a bridge to a soundboard that amplifies them. It is sometimes classified as both a percussion and a stringed instrument. A pianist can produce notes at different dynamic levels by controlling the speed with which the hammers hit the strings.

Pianos are popular instruments for private household ownership and have gained a place in the popular consciousness, and are sometimes referred to by nicknames including: "the ivories," "the joanna," "the eighty-eight," and "the black(s) and white(s)," "the little joe(s)." Playing the piano is sometimes referred to as "tickling the ivories.

Types of Pianos



The Grand Piano

Grand pianos have the frame and strings placed horizontally, with the strings extending away from the keyboard. This makes the grand piano a large instrument, for which the ideal setting is a spacious room with high ceilings for proper resonance.

The Upright Piano

Upright pianos, also called vertical pianos, are more compact because the frame and strings are placed vertically, extending in both directions from the keyboard and hammers. Some of the very best now approach the level of some grand pianos of the same size in tone quality and responsiveness.

The Electric Keyboard

Since the 1980s, digital pianos have been available, which use digital sampling
technology to reproduce the sound
of each piano note. The best digital pianos are sophisticated, with features including working pedals, weighted keys, multiple voices, and MIDI interfaces. Also other keyboards are made to create very unique sounds or to imitate other instruments. These sounds include electronic sound waves, voices, strings, horns, drums, etc.

The piano is a crucial instrument in Western classical music, jazz, film, television, and most other complex western musical genres. Since a large number of composers are proficient pianists, and because the piano keyboard offers an easy means of complex melodic and harmonic interplay, the piano is often used as a tool for composition.

 Organs

Pipe organs
The pipe organ is the grandest musical instrument in size and scope, and has existed in its current form since the
14th century (though other designs, such as the hydraulic organ, were already used in Antiquity). Along with the clock, it was considered one of the most complex human-made creations before the Industrial Revolution. Pipe organs range in size from a single short keyboard to huge instruments with over 10,000 pipes. A large modern organ typically has three or four keyboards (manuals) with five octaves (61 notes) each, and a two-and-a-half octave (32-note) pedal board.

Wolfgang Amadeus Mozart called the organ the "King of instruments".[4] Some of the biggest instruments have 64-foot pipes (a foot here means "sonic-foot", a measure quite close to the English measurement unit), and it sounds to an 8 Hz frequency fundamental tone. Perhaps the most distinctive feature is the ability to range from the slightest sound to the most powerful, plein-jeu impressive sonic discharge, which can be sustained in time indefinitely by the organist. For instance, the Wanamaker organ, located in Philadelphia, USA, has sonic resources comparable with three simultaneous symphony orchestras. Another interesting feature lies in its intrinsic "polyphony" approach: each set of pipes can be played simultaneously with others, and the sounds mixed and interspersed in the environment, not in the instrument itself. (Contrast this with digital organs, where the electronically produced sound comes from loudspeakers.)

Church organs
Most organs in North America, South America, Europe, Australia and New Zealand can be seen in Christian churches or Jewish synagogues. Therefore is generally called a church organ. The introduction of church organs is traditionally attributed to Pope Vitalian in the 7th century. Due to its ability to simultaneously provide a musical foundation below the vocal register, support in the vocal register, and increased brightness above the vocal register, the organ is ideally suited to accompany human voices, whether a congregation, a choir or a cantor or soloist. Most services also include solo organ repertoire for independent performance rather than by way of accompaniment, often as a prelude at the beginning the service and a postlude at the conclusion of the service.

Today this organ may be a pipe organ (see above), a digital or electronic organ that generates the sound with Digital Signal Processing (DSP) chips or a combination of pipes and electronics. It may be called a church organ or classical organ to differentiate it from the theater organ, which is a different style of instrument. However, as classical organ repertoire was developed for the pipe organ and in turn influenced its development, the line between a church and a concert organ is hard to draw.

Organs are also used to give recital concerts, called organ recitals. In the early 20th century, symphonic organs flourished in secular venues in the United States and UK, designed to replace symphony orchestras by playing transcriptions of orchestral pieces. Symphonic and orchestral organs largely fell out of favor as the Orgelbewegung (Organ Reform Movement) took hold in the middle of the 20th century and organ builders began to look to historical models for inspiration in constructing new instruments. Today, modern builders construct organs in a variety of styles and for both secular and sacred applications.


Theatre organs
The theatre organ or cinema organ was designed to accompany silent movies. Like a symphonic organ, it is made to replace an orchestra. However, it includes many more gadgets, such as percussion and special effects, to provide a more complete array of options to the theatre organist. Theatre organs tend not to take nearly as much space as standard organs, relying on extension and higher wind pressures to produce a greater variety of tone and larger volume of sound from fewer pipes.
This extension is called "unification", meaning that instead of one pipe for each key at all pitches, the higher octaves of pitch (and in some cases, lower octaves) are achieved by merely adding 12 pipes (one octave) to the top and/or bottom of a given division. Assuming there are sixty-one keys on an organ manual (a common number in concert organs and in North America), a classical organ will have, for diapason stops at 8', 4' and 2' pitch, a total of 183 pipes (61 plus 61 plus 61). The same chorus of diapasons on a theatre organ will have only 85 pipes (61 plus 12 plus 12). Some ranks, such as the Tibia Clausa, with up to 97 pipes, allow the organist to draw stops at 16', 8', 4', 2', and mutations from a single rank of pipes.
Unification gives a smaller instrument the capability of a much larger one, and works well for monophonic styles of playing (chordal, or chords with solo voice). The sound is, however, thicker and more homogeneous than a classically designed organ, and is very often reliant on the use of tremulant, which has a depth greater than that usually found on a classical organ. Unification also allows pipe ranks to be played from more than one manual and the pedals.


Electronic organs
Since the 1930s, pipeless electric instruments have been available to produce similar sounds and perform similar roles to pipe organs. Many of these have been bought both by houses of worship and other potential pipe organ customers, and also by many musicians both professional and amateur for whom a pipe organ would not be a possibility. Far smaller and cheaper to buy than a corresponding pipe instrument, and in many cases portable, they have taken organ music into private homes and into dance bands and other new environments, and have almost completely replaced the reed organ.

Hammond organs
The Hammond organ was the first successful electric organ, released in the 1930s. It used mechanical, rotating tonewheels to produce the sound waveforms. Its system of drawbars allowed for setting volumes for specific sounds, and it provided vibrato-like effects. The drawbars allow the player to choose volume levels of 0-8 for each of the members of the harmonic series starting from 16'. By emphasizing certain harmonics from the overtone series, desired sounds (such as 'brass' or 'string') can be imitated. Generally, the older Hammond drawbar organs had only preamplifiers and were connected to an external, amplified speaker. The Leslie speaker became the most popular, which is a rotating type speaker. The three most popular models of Hammond organs were the consoles: the B-3, C-3, and A-100. Inside all three models, the tone generators, drawbars, and keyboards were identical. The B-3 cabinet stood on 4 legs, the C-3 was an enclosed "church" model, and the A100 series had built in amplifiers and speakers.

In addition to these console models, Hammond also produced spinet models, which differed from the consoles in the size of keyboard (44 keys per keyboard versus 61 for the consoles, and 12 or 13 pedals instead of 25) and the absence of foldback and scaling in the keyboards making them cheaper to manufacture. Other features of the console organs such as vibrato or percussion were included in the spinets; all the spinet models featured a built in amplifier and speaker; when used with the external amplified speaker (e.g.: Leslie) they sound similar to the console models. These smaller all-in-one organs were intended primarily for use in homes or very small churches.

Though originally produced to replace organs in the church, the Hammond organ, especially the model B-3, became popular in jazz, particularly soul jazz, and in gospel music. Since these were the roots of rock and roll, the Hammond organ became a part of the rock and roll sound. It was widely used in rock and popular music during the 1960s and 1970s by bands like The Doors, Pink Floyd, Procol Harum, Santana and Deep Purple. Its popularity resurged in pop music around 2000, in part due to the availability of clonewheel organs that were light enough for one person to carry.

In the 1940s until the 1970s, small organs were sold that simplified traditional organ stops. These instruments can be considered the predecessor to modern portable keyboards, as they included one-touch chords, rhythm and accompaniment devices, and other electronically assisted gadgets. Lowrey was the leading manufacturer of this type of organs in the smaller (spinet) instruments.

In the '60s and '70s, a type of simple, portable electronic organ called the combo organ was popular, especially with pop and rock bands, and was a signature sound in the pop music of the period, such as The Doors, Led Zeppelin, and Iron Butterfly. The most popular combo organs were manufactured by Farfisa and Vox.

Conn-Selmer and Rodgers, dominant in more larger instrument market, also made electronic organs that used separate oscillators for each note, giving them a richer sound, closer to a pipe organ, due to the slight imperfections in tuning, by not using precise division.
Also available are hybrids, starting from early 20th century,[9] which incorporating a few ranks of pipes to produce some sounds, and using electronic circuits or digital samples for other sounds and to resolve borrowing collisions. Major manufacturers include Allen, Walker, Compton, Wicks, Marshall & Ogletree, Phoenix, Makin Organs, Wyvern Organs and Rodgers.

Digital organs
The development of the integrated circuit enabled another revolution in electronic keyboard instruments. Digita
organs sold since the 1970s utilize additive synthesis, then sampling technology (1980s) and physical modelling synthesis (1990s) are also utilized to produce the sound.

Virtual Pipe Organs, played via MIDI, access samples of real pipe organs stored on a computer, as opposed to digital organs that use DSP and processor hardware inside a console to produce sounds or deliver sound samples. They have high polyphony (up to about 40,000 pipes/1PC), which is necessary as there is a sample for every single pipe on the organ, plus samples and modeling effects such as mechanical action noise and pipe wind fluctuations. Addition of touch screen monitors or custom midi controllers allows the user to control the virtual organ console (drawing stops, operating couplers etc.) In its basic form, without a traditional wooden console, a Virtual Organ can be obtained at a much lower cost than other digital classical organs. With Stereo or mulitple channel audio systems, virtual organs can approach the acoustic realism of a real pipe organ. For example, for most Virtual Organs with a pedal division containing 16 ft or 32 ft pipes, a subwoofer arrangement is required to reproduce the powerful movement of air at frequencies around 32 Hz or lower. For personal purpose, typically small studio quality near-field monitors with subwoofer are used.