Pipe organ

Wind instrument controlled by keyboard

The pipe organ is a musical instrument that produces sound by driving pressurised air (called wind) through the organ pipes selected from a keyboard. Because each pipe produces a single tone and pitch, the pipes are provided in sets called ranks, each of which has a common timbre, loudness (volume), and construction throughout the keyboard compass. In other words, a rank is a set of pipes all having the same tonal quality, but having a range of different pitches.

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