The Best Piano Works of the 20th Century


My nonimations are:

Vignt Regards sur L’Enfant Jesus by Olivier Messiaen, and

The People United Will Never be Defeated by Frederic Rzewski

How about you?
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Marta Argerich playing anything, or the Richter recording of Shostakovich Piano Concerto #1. 
Bdp24 if you enjoy the solo piano version of "Pictures", I highly recommendd the Evgeny Kissen recording on RCA.

Thanks tubegroover. I have only one solo piano version, Richter's 1958/60 live recording issued on LP by CBS Records in the late 60's. The performance is great, but the recorded sound is pretty thin.
Very much enjoy Valentin Silvestrov (Ukrainian) music, much of which involves piano.
Would recommend checking out some of his CDs.
IMO: Thread title should be "personally most interesting" rather than "best piano works".