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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.
Bösendorfer pioneered the extension of the typical 88-key keyboard, creating the Imperial Grand (Model 290), which has 97 keys (eight octaves). Ferruccio Busoni initially ordered this innovation in 1909 as part of a custom piano, as he wanted to transcribe an organ piece that extended to the C below the standard keyboard. [8]
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. Pressing a key on the keyboard makes the ...
The Yamaha CP-70 is an electric piano manufactured by Yamaha Corporation between 1976 and 1985. The instrument was based on earlier electric piano technology, but took advantage of improved pickups along with the company's longstanding experience in manufacturing acoustic pianos. The new technology and a lack of a soundboard gave it a more ...
The Rhodes piano's keyboard is laid out like a traditional acoustic piano, but some models contain 73 keys instead of 88. [1] The 73-key model weighs around 130 pounds (59 kg). [2] The keyboard's touch and action is designed to be like an acoustic piano. Pressing a key results in a hammer striking a thin metal rod called a tine connected to a ...
The S90 provides 88 fully weighted keys, the number equivalent to a standard piano, emulating the pianistic mechanism. [5] The keyboard naturally provides initial touch, but also aftertouch response and has a 64-note polyphony [6] with 16 multitimbral parts providing a maximum of 4 performance parts.