 Alkan 's attachment to the music of his predecessors is demonstrated throughout his career , from his arrangements for keyboard of Beethoven 's Seventh Symphony ( 1838 ) , and of the <unk> of Mozart 's 40th Symphony ( 1844 ) , through the sets Souvenirs des concerts du Conservatoire ( 1847 and 1861 ) and the set Souvenirs de <unk> de <unk> ( 1862 ) , which include <unk> of music by Mozart , Beethoven , J. S. Bach , Haydn , <unk> , and others . In this context should be mentioned Alkan 's extensive <unk> for Beethoven 's 3rd Piano Concerto ( 1860 ) , which includes quotes from the finale of Beethoven 's 5th Symphony . Alkan 's <unk> , together with original music of Bach , Beethoven , Handel , Mendelssohn , <unk> and <unk> , were frequently played during the series of Petits Concerts given by Alkan at Erard . 
