Composed by avant-garde artist John Cage, the piece is expected to play in Germany until the year 2640.
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John Cage: Organ playing 639-year-long piece changes chord
![](https://usanewsupdate.com/wp-content/uploads/2024/02/132557438_klangwechsel_22_internet-6d4bea11.jpg)
Composed by avant-garde artist John Cage, the piece is expected to play in Germany until the year 2640.
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