Gioachino Rossini William Tell succession mystery : how the most famous composer of his time , the last representative of the great aristocratic tradition of bel canto decorated and closed forms , he left to posterity a last opera which modernity ceases to surprise us ? What artistic metamorphosis Swan of Pesaro has there been between the creation of sumptuous and academic Semiramide in Venice ( 1823) and the William Tell on the stage of the Paris Opera (1829 ) ? Rossini was then 37 years old , no longer write new operas and withdraws into a quiet retreat Paris . He leaves the world of opera a monument to innovative romantic breath , fluid forms, the famous opening , real symphonic poem in four movements , is leading the way for composers to come. Guillaume Tell, twenty years before the Spring of Nations , is already a celebration of European nations , the fight for freedom and exaltation of feeling for nature . How ironic for Gioachino Rossini have worn during his career image of an author steeped in tradition and go on a revolutionary work!