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2. Musical keyboard - Wikipedia

   en.wikipedia.org/wiki/Musical_keyboard

   Musical keyboard. A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, shorter keys that repeats at the interval of an octave.

3. Piano - Wikipedia

   en.wikipedia.org/wiki/Piano

   Piano Grand piano Upright piano Keyboard instrument Hornbostel–Sachs classification 314.122-4-8 (Simple chordophone with keyboard sounded by hammers) Inventor(s) Bartolomeo Cristofori Developed Early 18th century Playing range The Well-Tempered Clavier, first prelude of Book I Played by Kimiko Douglass-Ishizaka Problems playing this file? See media help. A piano is a keyboard instrument that ...

4. Keyboard instrument - Wikipedia

   en.wikipedia.org/wiki/Keyboard_instrument

   A keyboard instrument is a musical instrument played using a keyboard, a row of levers that are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos. Other keyboard instruments include celestas, which are struck idiophones operated by a keyboard, and ...

5. List of keyboard instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_keyboard_instruments

   A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers.The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos.

6. Piano key frequencies - Wikipedia

   en.wikipedia.org/wiki/Piano_key_frequencies

   Piano key frequencies. This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1][2] Every octave is made of twelve steps called semitones.

7. Electronic keyboard - Wikipedia

   en.wikipedia.org/wiki/Electronic_keyboard

   Electronic keyboards include synthesizers, digital pianos, stage pianos, electronic organs and digital audio workstations. In technical terms, an electronic keyboard is a rompler -based synthesizer with a low-wattage power amplifier and small loudspeakers. Electronic keyboards offer a diverse selection of instrument sounds (piano, organ, violin ...