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QO2 - 030610 - pierre berthet plays tom johnson | by fabonthemoon
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QO2 - 030610 - pierre berthet plays tom johnson


Galileo is a composition/instrument that swings on five pendulums. The slowest of these hangs from a line about 260 cm long, suspended from a height of about four meters. The other four pendulums must be carefully measured, following the formula discovered by Galileo Galilei some 500 years ago, so as to make their cycles in 1/2, 2/3, 3/4, and 4/5 the time necessary for the longest. A sequence of short compositions allow us to hear all the different combinations of tempos. The piece has evolved slowly from three pendulums to five, from 10 minute to over 40, in a variety of situations.

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Taken on June 3, 2010