Haydn and Mozart radically transformed the structure and form of the Symphony, establishing it as point of departure for all future musicians. Mozart's music was a natural starting point for Beethoven, and Brahms, the last great Romantic of the 19th century derived his symphonic conception from the same source, while at the same time (along with Wagner) sowing the seeds for the crisis and renewal of 20th century music. Even so-called New Music, inspired by Webern and initiated by Boulez and Schoenberg, which in the fifties explored new sound dimensions and forms continued to be aware of Mozart as an example of innovatory force and unequalled genius. A genius nowhere more evident than in his symphonies - n.41 in particular, as one can deduce by reading the lessons in dodecaphonic music held at the Milan Conservatory in the Sixties.