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Because these keys receive less wear, they are often made of black colored wood and called the black notes or black keys. Black keys form a pentatonic scale. The entire pattern repeats at the interval of an octave. The arrangement of longer keys for C major with intervening, shorter keys for the intermediate semitones date to the 15th century.
Hemitonic pentatonic scales are also called "ditonic scales", because the largest interval in them is the ditone (e.g., in the scale C–E–F–G–B–C, the interval found between C–E and G–B). [7] (This should not be confused with the identical term also used by musicologists to describe a scale including only two notes.)
A piano is a keyboard instrument that produces sound when its keys are depressed, activating an action mechanism where hammers strike strings. Modern pianos have a row of 88 black and white keys, tuned to a chromatic scale in equal temperament. A musician who specializes in piano is called a pianist.
Étude Op. 10, No. 5 is known as the "Black Key Étude" as its right-hand part is entirely on black keys, except for one note. Leichtentritt states that the melodic character resulting from the use of black keys is "based on the pentatonic scale to which the piece owes its strangely playful, attractively primitive tint."
Example of piano tone clusters. The clusters in the upper staff—C ♯ D ♯ F ♯ G ♯ —are four successive black keys. The last two bars, played with overlapping hands, are a denser cluster. A tone cluster is a musical chord comprising at least three adjacent tones in a scale.
Marked by musically charged sculptures, such as Gozié Ojini’s disassembled piano keys and Jamal Cyrus’ saxophone — with ropes spewing out of its tone holes — the room explores Coltrane ...
Some chromatic systems have been created taking advantage of the layout of black and white keys of the standard piano keyboard. The "staff" is most widely referred to as " piano roll ", created by extending the black and white piano keys.
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