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Piano - Wikipedia, the free encyclopedia |
 | | This arrangement was inherited from the harpsichord without change, with the trivial exception of the colour scheme (white for notes in the C major scale and fl for other notes) which became standard for pianos in the late 18th century. |
 | | Sometimes, these extra keys are hidden under a small hinged lid, which can be flipped down to cover the keys and avoid visual disorientation in a pianist unfamiliar with the extended keyboard; on others, the colours of the extra white keys are reversed (fl instead of white). |
 | | Traditionally, the fl keys were made from ebony and the white keys were covered with strips of ivory, but since ivory-yielding species are now endangered and protected by treaty, plastics are now almost exclusively used. |
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