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The world's slowest musical composition, John Cage's 'As Slow as Possible,' changes chord for first time in seven years | CNN
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31 August 2020, Saxony-Anhalt, Halberstadt: The organ of the John Cage Organ Foundation Halberstadt inside the Burchardi Church. The organ has been playing the music piece "ORGAN2/ASLSP" by John Cage without interruption
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