: Theme And Variations For The Piano (1956) () 1: Theme; Fourteen Variations; Coda () : Sonata For The Piano (1957, Revised 2007-08) () 2: Moderato Energico () 3: Andante Poco Rubato () 4: Presto Con Fuoco () : Evolving Cycle Of Two-Part Modal Inventions For Piano (1964) () 5: Introductory One-Part Invention; Six Two-Part Inventions () 6: Essay In Sound For The Piano (2011) ()