For the piano , Dukas wrote two complex and difficult works , a Sonata in E-flat minor ( 1901 ) and Variations , interlude and finale on a theme of Rameau ( 1902 ) , again in the style of Beethoven and Franck . In the decade after L'apprenti sorcier , Dukas completed two complex and technically demanding large-scale works for solo piano : the Piano Sonata ( 1901 ) , dedicated to Saint-Sa Ã `` ns , and Variations , Interlude and Finale on a Theme by Rameau ( 1902 ) . In Dukas 's piano works critics have discerned the influence of Beethoven , or , `` Beethoven as he was interpreted to the French mind by CÃ sar Franck '' .