Aida (or Aïda, ) is an opera in four acts by Giuseppe Verdi to an Italian libretto by Antonio Ghislanzoni. Set in the Old Kingdom of Egypt, it was commissioned by Cairo's Khedivial Opera House and had its première there on 24 December 1871, in a performance conducted by Giovanni Bottesini. Today the work holds a central place in the operatic canon, receiving performances every year around the world; at New York's Metropolitan Opera alone, Aida has been sung more than 1,100 times since 1886. Ghislanzoni's scheme follows a scenario often attributed to the French Egyptologist Auguste Mariette, but Verdi biographer Mary Jane Phillips-Matz argues that the source is actually Temistocle Solera. Elements of the opera's genesis and sources Isma'il Pasha, Khedive of Egypt, commissioned Verdi to write an opera to celebrate the opening of the Suez Canal, but Verdi declined. However, Auguste Mariette, a French Egyptologist, proposed to Khedive Pasha a plot for a celebratory opera set in ancient Egypt. Khedive Pasha referred Mariette to theatre manager Camille du Locle, who sent Mariette's story idea to Verdi. Eventually, Verdi agreed to compose an opera based on that story, for 150,000 francs. Because the scenery and costumes were stuck in the French capital during the Siege of Paris (1870–71) of the ongoing Franco-Prussian War, the premiere was delayed and Verdi's Rigoletto was performed instead. The first opera performed at the Khedivial Opera House, Aida eventually premiered in Cairo on Christmas Eve of 1871. Performance history Cairo premiere and initial success in Italy Verdi originally chose to write a brief orchestral prelude instead of a full overture for the opera. He then composed an overture of the "potpourri" variety to replace the original prelude. However, in the end he decided not to have the overture performed because of its—his own words—"pretentious silliness". This overture, never used today, was given a rare broadcast performance by Arturo Toscanini and the NBC Symphony Orchestra on 30 March 1940, but was never commercially issued. Aida met with great acclaim when it finally opened in Cairo on 24 December 1871. The costumes and accessories for the première were designed by Auguste Mariette, who also oversaw the design and construction of the sets, which were made in Paris by the Opéra's scene painters Auguste-Alfred Rubé and Philippe Chaperon (acts 1 and 4) and Édouard Desplechin and Jean-Baptiste Lavastre (acts 2 and 3), and shipped to Cairo. Although