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Many musical instruments which have a key for each note lay them out in the standard way shown in the graphic: the piano, harpsichord, clavichord, organ, synthesizer, celesta, melodica and carillon keyboards. Also, instruments such as the xylophone which have a separate sounding part for each note lay them out in this pattern.
The twelve notes of the Western musical scale are laid out with the lowest note on the left; the seven larger keys (for the "natural" notes of the C major scale: C, D, E, F, G, A, B) jut forward, with the sharp and flatAlternate uses: Flat (disambiguation note A flat on the treble clef. In music, flat means "lower in pitch. More specifically, in music notation, flat means "lower in pitch by a semitone," and has an associated symbol , which looks like a lowercase "b"; th keys less prominent. The pattern then repeats at the interval of an octaveIntervals : For the numerical computation software, see GNU Octave. In music, an octave (sometimes abbreviated 8ve or 8va is the interval between one musical note and another with half or double the frequency. For example, if one note is pitched at 400 Hz. The arrangement of white keys with intervening, shorter black keys representing intermediate half-steps(semitones) dates to the 15th century14th century 15th century 16th century other centuries) As a means of recording the passage of time, the 15th century was that century which lasted from 1401 to 1500. Events Renaissance affects philosophy, science and art. The New Monarchs come to power i. In the following centuries many improvements were made, including a gradually increasing chromatic compass which reached five octaves in the 18th century17th century 18th century 19th century more centuries) As a means of recording the passage of time, the 18th century refers to the century that lasted from 1701- 1800; however, historians will sometimes specifically refer to the 18th Century as 1715- 89,, and attained the current 88-key range for the modern piano shortly after 1870. Some modern pianos have even more notes (Bösendorfer 255 has 92 and Bösendorfer 290 "Imperial" has 97 keys), and modern synthesizer keyboards commonly have either 61, 76 or 88 keys.
Some non-standard musical keyboards
See also: