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Tim Hecker : Ravedeath 1972 (2011)

https://archive.org/details/hecker 

https://archive.org/details/hecker/01+-+The+Piano+Drop+-+In+the+Fog+I-II.flac 

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https://en.wikipedia.org/wiki/Ravedeath,_1972

Reiko. A With Merzbow, Achim Wollscheid : Coruscanto - きらめく