was almost finished, and because of delays, he had time to hear several of the proposed singers in a performance of Rossini's L'assedio di Corinto given on 12 January, the day before rehearsals of Belisario were to begin. In the case of Antonietta Vial (who was to sing the role of Irene and whom he described on first hearing her as "both a bastard soprano and a veiled contralto", he was able to make adjustments to suit her vocal limitations. By the time of the first performance, which was well received, Donizetti reported to his publisher the audience's reaction to most of the numbers, specifically that "in the duet for Vial and Salvatore, many shouts of bravi, but at the end (so they say) the situation is so moving that they were weeping". In a review of a 2011 London performance, some of the strengths of Donizetti's score are outlined: "The central couple are played by bass and soprano, which brings Verdi's Macbeth immediately to mind. But Donizetti's score has none of Verdi's furious compression, and dramatically we are in very different territory. Belisario and Antonina, the latter more Regan than Lady Macbeth, are at each others' throats rather than united by desire for power. Her machinations lead to his being blinded then expelled from Byzantium into the natural world beyond. The emotional centre lies, however, in Donizetti's forceful depiction of Belisario's relationship with his strong-willed daughter Irene – you think at once of Cordelia – and his eventual reunion with Alamiro, the son who vanished in infancy and in whose supposed murder Belisario is implicated." Performance history 19th century The opera's popularity continued through the 19th century, with stagings in 31 cities both in Europe and America. Its first performance in London took place on 1 April 1837, but it only reached the United States on 29 July 1843 in Philadelphia and later in New York on 14 February 1844. After an 1899 performance in Coblenz, the opera disappeared. 20th century and beyond Modern productions have been rare. Revivals took place in 1969 at La Fenice, in 1970 at Bergamo, in 1972 in London, in 1973 in Naples, in 1981 in Buenos Aires, and in 1990 at Rutgers University in New Jersey. Most notable amongst performers in the leading female role has been Leyla Gencer. The opera was presented in January 2005 by the North Carolina School for Arts