 Mention should also be made of Meyerbeer 's intense concern with the business of opera , which indeed had formed part of his studies under Vogler . This gave him the background not only to deal with complex contractual issues and to negotiate with publishers , but extended to wooing the press and ' marketing ' in general . Indeed , he was probably the originator of the ' press conference ' at which journalists were fed <unk> and information . This marketing and <unk> of opera was reinforced by Meyerbeer 's Paris publisher Maurice Schlesinger who had established his fortune on the back of Robert , and even persuaded <unk> de <unk> to write a novella ( <unk> ) to promote Les Huguenots . Schlesinger 's publication of Franz Liszt 's <unk> de Robert le diable sold out on the day of issue and was immediately reprinted . Such manoeuvres did little to <unk> Meyerbeer to his fellow artists , and indeed engendered envious comments of the sort already quoted from Berlioz and Chopin . 
