A keyboard instrument is any musical instrument played using a musical keyboard. The most common of these is the piano. Other widely used keyboard instruments include multiple types of organs as well as other mechanical, electromechanical and electronic instruments. In common language, it is mostly used to refer to keyboard-style synthesizers.
Among the earliest keyboard instruments are the pipe organ, hurdy gurdy, clavichord, and harpsichord. The organ is without doubt the oldest of these, appearing in the 3rd century BC, although this early instrument—called hydraulis--did not use a keyboard in the modern sense. From its invention until the 14th century, the organ remained the only keyboard instrument. Often, the organ did not feature a keyboard at all, rather buttons or large levers which were operated by a whole hand. Almost every keyboard until the 15th century had naturals to each octave.
The clavichord and the harpsichord appeared during the 14th century, the clavichord probably being the earlier. The harpsichord and the clavichord were both very common until the widespread adoption of the piano in the 18th century, after which their popularity decreased. The piano was revolutionary because a pianist could vary the volume (or dynamics) of the sound by varying the vigor with which each key was struck. The piano's full name is "gravicèmbalo con piano e forte" meaning "harpsichord with soft and loud" but can be shortened to "piano-forte", which means "soft-loud" in Italian.
Keyboard instruments were further developed in the 20th century. Early electromechanical instruments, such as the Ondes Martenot, appeared early in the century. This was a very important contribution to the keyboard's history.
The keys were traditionally made of natural materials. The white tangents were made of ivory, the black of ebony, but now artificial materials like plastic are used to cover the wooden keys. Cheaper materials like oak, walnut and soft wood are used now.
On most keyboard instruments, a "black note" is one of the smaller keys that stand above the "white notes". All the black notes found within an octave form a pentatonic scale. Black notes can be referred to as sharps of the white note below, or as flats of the white note above. In keyboard percussion instruments with a layout similar to that of the piano, the corresponding notes are often also called "the black notes" even though in reality the bars producing those notes are of the same color as the rest of the instrument's bars.
Full article ▸