Some very famous impresarios from the past include Rudolf Bing , Sergei Diaghilev , Richard D'Oyly Carte , Fortune Gallo , and Sol Hurok . Significant modern impresarios in the traditional sense include Rudolf Bing , Sergei Diaghilev , Richard D'Oyly Carte , Fortune Gallo , Sol Hurok , Aaron Richmond , and jazz festival producer George Wein .