Sealed 1969 360 Sound Stereo Original. Cut Corner. Nancarrow Mainly Composed For Player Piano By Programming Sound Events Via Punched Paper Rolls. He Was One Of The First Composers To Use The Technical Possibilities Of Mechanical Musical Instruments Making Them Play Far Beyond Human Performance Ability. György Ligeti, Among Others, Honored Him By Calling His Work The Greatest Discovery Since Webern And Ives.