The organ is a
keyboard instrument played using one or more
manuals and a
pedalboard. It uses wind moving through metal or wood pipes and/or it uses sampled organ sounds or oscillators to produce sound, which remains constant while a key is depressed. Its sounds, which vary widely in timbre and volume, are divided according to ranks and controlled by the use of
stops. The keyboard is not
expressive and does not affect
dynamics. Organs vary greatly in size, ranging from a cubic yard to a height reaching five floors , and are located primarily in churches, concert halls, and homes. The organ is one of the oldest
musical instruments in the
Western musical tradition, and carries a rich history connected with
Christian liturgy and civic ceremony.
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