Conlon Nancarrow?

An Abraham Lincoln brigader who subsequently chose Mexico over anti-Communist USA, Nancarrow (27 OCT 12 – 10 AUG 97) was a thoroughly experimental composer. (from Wikipedia) The complete contents of his studio, including his player piano rolls, instruments, libraries, documents & other objects are now in the Paul Sacher Foundation in Basel. Germans Jurgen Hocker & Wolfgang Heisig are the current live-performers of Nancarrow's player-rolls using similar acoustical instruments. Other performers of his works (often in arrangement for live musicians) include Thomas Ades, Alarm Will Sound & Netherlands ensemble Calefax who also recorded his Studies for player piano, already named 'Best CD of 2009' by Dutch newspaper Het Parool.