Impresario
organizer and financier of concerts, plays, or operas
An Impresario is somebody who organizes concerts, operas, ballets or plays. The word comes from the Italian word impresa, which means "an enterprise" or "undertaking".
Some very famous impresarios from the past include Rudolf Bing, Sergei Diaghilev, Richard D'Oyly Carte, Fortune Gallo, and Sol Hurok.