A key is a small rectangular button on a musical instrument that is depressed to cause the instrument to create a sound of a particular pitch. Keys are organized into keyboards, typically with the keys arranged left to right from the lowest pitch to highest and with the naturals done in white and the sharps/flats in black. In geometry, a rectangle is a defined as a quadrilateral polygon in which all four angles are right angles. ... A musical instrument is a device that has been constructed or modified with the purpose of making music. ... A schematic representation of auditory signaling Sound is vibration, as perceived by the sense of hearing. ... In music, pitch is the perception of the frequency of a note. ... Three Year Old Girl playing with a Keyboard , The musical keyboard, also known as the piano keyboard is the set of adjacent depressible levers on a musical instrument which produce notes. ... -1... White is a color (more accurately it contains all the colors of the spectrum and is sometimes described as an achromatic color—black is the absence of color) that has high brightness but zero hue. ... This article is about the musical notation. ... Alternate uses: Flat (disambiguation) Figure 1. ... Black is a color with several subtle differences in meaning. ...

Instuments that use keys

Piano This article is about the modern musical instrument. ...

Synthesizer A classic FM synthesizer, the Yamaha DX7. ...

Harpsichord A harpsichord is the general term for a family of European keyboard instruments, including the large instrument nowadays called a harpsichord, but also the smaller virginals, the muselar virginals and the spinet. ...

Clavinova The Clavinova is a musical instrument created by the Yamaha Corporation. ...

Organ An organ is the following: In anatomy, an organ is a group of tissues which perform some function. ...

Accordian a piano accordion An accordion is a small portable free-reed wind instrument with a keyboard, the smallest representative of the organ family. ...