Hello,
many years ago i catched from a radio station a piano piece:
https://www.dropbox.com/s/a8it1t25v4add6b/frag-unknown-wysch.mp3?dl=0

it sounds very close to Wyschnegradsky's Dithyrambe, but quite shorter and simpler,
maybe it is a version, hommage or arrangement from other composer?

if anyone knows the pianist or composer, that would be great,
anyway, thanks
and salutes.