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The standard organ manual keyboard has 61 keys and the pedal keyboard has 32 keys. Most pipe organs have at least two manual keyboards and large organs have four or more. The number of keys has grown over time. The organ of Bach's time had 49 keys or less. Some of the lower octaves were "short." The pedal keyboard had 25 keys. Over time the compass grew with the standard growing to 56 manual keys and 27 to 30 pedal keys. The American Guild of Organists set the standard to the 61 - 32 compass in the early twentieth century.

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15y ago

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