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| Pipe OrganHistory, Facts and interesting information about Medieval music, specifically, Pipe Organ Definition and Description of the Pipe Organ
The Pipe Organ - Church Music The Pipe Organ Construction "Take first, ten pipes of a proper dimension and of equal length and size. Divide the first pipe into nine parts; eight of these will be the length of the second. Dividing the length of this again into nine parts, eight of these will be the proper length of the third; dividing the first pipe into four parts, three of them will be the length of the fourth; taking the first pipe as three parts, two of them will be the length of the fifth; eight-ninths of this again will give the proper length of the sixth; eight-ninths of this, the length of the seventh; one-half the first, the length of the eighth, or octave." The early pipe organs were furnished with slides which the organist pulled out when he wished to make a pipe speak, and pushed back to check its utterance. The date of the invention of the valve is uncertain, but it must have been about as soon as the power of the instrument was increased by the addition of the second or third stop. The earliest chromatic keyboards known are those in the pipe organ erected at Halberstadt cathedral in 1361. This pipe organ had twenty-two keys, fourteen diatonics and eight chromatics, extending from B natural up to A; and twenty bellows blown by ten men.
Organ Bellows in the organ at Halberstadt Medieval Music - Pipe Organ |
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