1) " Petrof" -- As it applies to Petrof Pianos Petrof is a Czech piano maker. If youread their name backwards, you obtain "fortep" which stands for "fortepiano". External links Pstrof .cz ( http: www.petrof.cz ) This article is a stub. You can help Wikipedia by expanding it ( http: en.wikipedia.org/w/index.php?title=Petrof&action=edit ). Perrof ...
2) " Pianos" -- As it applies to Petrof Pianos The piano Piano is a common abbreviation for pianoforte, a large musical instrument with a keyboard (see keyboard instrument ). Its sound is produced by stringsstretched on a rigid frame. These vibrate when struck by felt-covered hammers, which are activated by the keyboard. The word pianoforte is Italian for soft-loud, referring to the ability of the piano to play notes at different volumesdepending on how hard its keys are pressed.As a keyboard stringed instrument, the piano is similar to the clavichord and harpsichord. The three instruments differ in the mechanism of soundproduction. In a harpsichord, strings are plucked by quills or similar material. In the clavichord, strings are struck bytangents which remain in contact with the string. In a piano, the strings are struck by hammers which immediately rebound,leaving the string to vibrate freely. The piano has been a crucial instrument in the tradition of Western classical music. A large number of composers were also pianists, and they frequently used the piano as atool for composition. A person who performs music on the piano is known as a pianist. Contents 1 History 1.1 Piano history and musical performance 2 The modern piano 2.1 Types of piano 2.2 Keyboard and pedals 2.3 The materials of the piano 2.4 Care and maintenance of Pianos 3 Famous piano makers 4 Further reading 5 See also 6 External links 7 Other meanings History The piano was invented by Bartolomeo Cristofori in Florence, Italy. When he built his firstpiano is not entirely clear, but Franceso Mannucci wrote in his diary that Cristofori was working on an "arcicembal che fa ilpiano e il forte" ("harpsichord that plays both softly and loudly") as early as 1698.All of his surviving instruments date from the 1720s. Cristofori built only about 20pianofortes before he died at age 75 in 1731, roughly 21 yea...
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