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The Longest Lasting Musical Performance A S L A P by John Cage

John Cage created the composition ORGAN²/ASLSP for organ 1987 (originally composed for piano in 1985). The slowest organ music performance ASLSP – As Slow aS Possible – was realized by the John-Cage-Organ-Project -Foundation in the monastery Burchardi-Kirche in Halberstadt, Germany. The next sound change will take place in October, 5th 2020.

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