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Robert Rauschenberg, Erased de Kooning Drawing (1953)
It never stops being astonishing, the way the dynamics of a piece can outgrow the original input, the aesthetic conception, the initial conceptual framework.
I had heard a version where it was Rauschenberg asking De Koonig for a drawing that was dear to him. The story as told by Rauschenberg is so much more human, and impressive.